onnookk/dataset_only_hme · Datasets at Hugging Face

concat_prompt stringlengths 132 1.99k
def make_a_pile(n): """ Given a positive integer n, you have to make a pile of n levels of stones. The first level has n stones. The number of stones in the next level is: - the next odd number if n is odd. - the next even number if n is even. Return the number of stones in each level in a list, where element at index i represents the number of stones in the level (i+1). Examples: >>> make_a_pile(3) [3, 5, 7] """ return [n + 2*i for i in range(n)]
def words_string(s): """ You will be given a string of words separated by commas or spaces. Your task is to split the string into words and return an array of the words. For example: words_string("Hi, my name is John") == ["Hi", "my", "name", "is", "John"] words_string("One, two, three, four, five, six") == ["One", "two", "three", "four", "five", "six"] """ if not s: return [] s_list = [] for letter in s: if letter == ',': s_list.append(' ') else: s_list.append(letter) s_list = "".join(s_list) return s_list.split()
def choose_num(x, y): """This function takes two positive numbers x and y and returns the biggest even integer number that is in the range [x, y] inclusive. If there's no such number, then the function should return -1. For example: choose_num(12, 15) = 14 choose_num(13, 12) = -1 """ if x > y: return -1 if y % 2 == 0: return y if x == y: return -1 return y - 1
def rounded_avg(n, m): """You are given two positive integers n and m, and your task is to compute the average of the integers from n through m (including n and m). Round the answer to the nearest integer and convert that to binary. If n is greater than m, return -1. Example: rounded_avg(1, 5) => "0b11" rounded_avg(7, 5) => -1 rounded_avg(10, 20) => "0b1111" rounded_avg(20, 33) => "0b11010" """ if m < n: return -1 summation = 0 for i in range(n, m+1): summation += i return bin(round(summation/(m - n + 1)))
def unique_digits(x): """Given a list of positive integers x. return a sorted list of all elements that hasn't any even digit. Note: Returned list should be sorted in increasing order. For example: >>> unique_digits([15, 33, 1422, 1]) [1, 15, 33] >>> unique_digits([152, 323, 1422, 10]) [] """ odd_digit_elements = [] for i in x: if all (int(c) % 2 == 1 for c in str(i)): odd_digit_elements.append(i) return sorted(odd_digit_elements)
def by_length(arr): """ Given an array of integers, sort the integers that are between 1 and 9 inclusive, reverse the resulting array, and then replace each digit by its corresponding name from "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine". For example: arr = [2, 1, 1, 4, 5, 8, 2, 3] -> sort arr -> [1, 1, 2, 2, 3, 4, 5, 8] -> reverse arr -> [8, 5, 4, 3, 2, 2, 1, 1] return ["Eight", "Five", "Four", "Three", "Two", "Two", "One", "One"] If the array is empty, return an empty array: arr = [] return [] If the array has any strange number ignore it: arr = [1, -1 , 55] -> sort arr -> [-1, 1, 55] -> reverse arr -> [55, 1, -1] return = ['One'] """ dic = { 1: "One", 2: "Two", 3: "Three", 4: "Four", 5: "Five", 6: "Six", 7: "Seven", 8: "Eight", 9: "Nine", } sorted_arr = sorted(arr, reverse=True) new_arr = [] for var in sorted_arr: try: new_arr.append(dic[var]) except: pass return new_arr
def f(n): """ Implement the function f that takes n as a parameter, and returns a list of size n, such that the value of the element at index i is the factorial of i if i is even or the sum of numbers from 1 to i otherwise. i starts from 1. the factorial of i is the multiplication of the numbers from 1 to i (1 * 2 * ... * i). Example: f(5) == [1, 2, 6, 24, 15] """ ret = [] for i in range(1,n+1): if i%2 == 0: x = 1 for j in range(1,i+1): x *= j ret += [x] else: x = 0 for j in range(1,i+1): x += j ret += [x] return ret
def even_odd_palindrome(n): """ Given a positive integer n, return a tuple that has the number of even and odd integer palindromes that fall within the range(1, n), inclusive. Example 1: Input: 3 Output: (1, 2) Explanation: Integer palindrome are 1, 2, 3. one of them is even, and two of them are odd. Example 2: Input: 12 Output: (4, 6) Explanation: Integer palindrome are 1, 2, 3, 4, 5, 6, 7, 8, 9, 11. four of them are even, and 6 of them are odd. Note: 1. 1 <= n <= 10^3 2. returned tuple has the number of even and odd integer palindromes respectively. """ def is_palindrome(n): return str(n) == str(n)[::-1] even_palindrome_count = 0 odd_palindrome_count = 0 for i in range(1, n+1): if i%2 == 1 and is_palindrome(i): odd_palindrome_count += 1 elif i%2 == 0 and is_palindrome(i): even_palindrome_count += 1 return (even_palindrome_count, odd_palindrome_count)
def count_nums(arr): """ Write a function count_nums which takes an array of integers and returns the number of elements which has a sum of digits > 0. If a number is negative, then its first signed digit will be negative: e.g. -123 has signed digits -1, 2, and 3. >>> count_nums([]) == 0 >>> count_nums([-1, 11, -11]) == 1 >>> count_nums([1, 1, 2]) == 3 """ def digits_sum(n): neg = 1 if n < 0: n, neg = -1 * n, -1 n = [int(i) for i in str(n)] n[0] = n[0] * neg return sum(n) return len(list(filter(lambda x: x > 0, [digits_sum(i) for i in arr])))
def move_one_ball(arr): """We have an array 'arr' of N integers arr[1], arr[2], ..., arr[N].The numbers in the array will be randomly ordered. Your task is to determine if it is possible to get an array sorted in non-decreasing order by performing the following operation on the given array: You are allowed to perform right shift operation any number of times. One right shift operation means shifting all elements of the array by one position in the right direction. The last element of the array will be moved to the starting position in the array i.e. 0th index. If it is possible to obtain the sorted array by performing the above operation then return True else return False. If the given array is empty then return True. Note: The given list is guaranteed to have unique elements. For Example: move_one_ball([3, 4, 5, 1, 2])==>True Explanation: By performin 2 right shift operations, non-decreasing order can be achieved for the given array. move_one_ball([3, 5, 4, 1, 2])==>False Explanation:It is not possible to get non-decreasing order for the given array by performing any number of right shift operations. """ if len(arr)==0: return True sorted_array=sorted(arr) my_arr=[] min_value=min(arr) min_index=arr.index(min_value) my_arr=arr[min_index:]+arr[0:min_index] for i in range(len(arr)): if my_arr[i]!=sorted_array[i]: return False return True
def exchange(lst1, lst2): """In this problem, you will implement a function that takes two lists of numbers, and determines whether it is possible to perform an exchange of elements between them to make lst1 a list of only even numbers. There is no limit on the number of exchanged elements between lst1 and lst2. If it is possible to exchange elements between the lst1 and lst2 to make all the elements of lst1 to be even, return "YES". Otherwise, return "NO". For example: exchange([1, 2, 3, 4], [1, 2, 3, 4]) => "YES" exchange([1, 2, 3, 4], [1, 5, 3, 4]) => "NO" It is assumed that the input lists will be non-empty. """ odd = 0 even = 0 for i in lst1: if i%2 == 1: odd += 1 for i in lst2: if i%2 == 0: even += 1 if even >= odd: return "YES" return "NO"
def histogram(test): """Given a string representing a space separated lowercase letters, return a dictionary of the letter with the most repetition and containing the corresponding count. If several letters have the same occurrence, return all of them. Example: histogram('a b c') == {'a': 1, 'b': 1, 'c': 1} histogram('a b b a') == {'a': 2, 'b': 2} histogram('a b c a b') == {'a': 2, 'b': 2} histogram('b b b b a') == {'b': 4} histogram('') == {} """ dict1={} list1=test.split(" ") t=0 for i in list1: if(list1.count(i)>t) and i!='': t=list1.count(i) if t>0: for i in list1: if(list1.count(i)==t): dict1[i]=t return dict1
def reverse_delete(s,c): """Task We are given two strings s and c, you have to deleted all the characters in s that are equal to any character in c then check if the result string is palindrome. A string is called palindrome if it reads the same backward as forward. You should return a tuple containing the result string and True/False for the check. Example For s = "abcde", c = "ae", the result should be ('bcd',False) For s = "abcdef", c = "b" the result should be ('acdef',False) For s = "abcdedcba", c = "ab", the result should be ('cdedc',True) """ s = ''.join([char for char in s if char not in c]) return (s,s[::-1] == s)
def odd_count(lst): """Given a list of strings, where each string consists of only digits, return a list. Each element i of the output should be "the number of odd elements in the string i of the input." where all the i's should be replaced by the number of odd digits in the i'th string of the input. >>> odd_count(['1234567']) ["the number of odd elements 4n the str4ng 4 of the 4nput."] >>> odd_count(['3',"11111111"]) ["the number of odd elements 1n the str1ng 1 of the 1nput.", "the number of odd elements 8n the str8ng 8 of the 8nput."] """ res = [] for arr in lst: n = sum(int(d)%2==1 for d in arr) res.append("the number of odd elements " + str(n) + "n the str"+ str(n) +"ng "+ str(n) +" of the "+ str(n) +"nput.") return res
def minSubArraySum(nums): """ Given an array of integers nums, find the minimum sum of any non-empty sub-array of nums. Example minSubArraySum([2, 3, 4, 1, 2, 4]) == 1 minSubArraySum([-1, -2, -3]) == -6 """ max_sum = 0 s = 0 for num in nums: s += -num if (s < 0): s = 0 max_sum = max(s, max_sum) if max_sum == 0: max_sum = max(-i for i in nums) min_sum = -max_sum return min_sum
def max_fill(grid, capacity): import math """ You are given a rectangular grid of wells. Each row represents a single well, and each 1 in a row represents a single unit of water. Each well has a corresponding bucket that can be used to extract water from it, and all buckets have the same capacity. Your task is to use the buckets to empty the wells. Output the number of times you need to lower the buckets. Example 1: Input: grid : [[0,0,1,0], [0,1,0,0], [1,1,1,1]] bucket_capacity : 1 Output: 6 Example 2: Input: grid : [[0,0,1,1], [0,0,0,0], [1,1,1,1], [0,1,1,1]] bucket_capacity : 2 Output: 5 Example 3: Input: grid : [[0,0,0], [0,0,0]] bucket_capacity : 5 Output: 0 Constraints: * all wells have the same length * 1 <= grid.length <= 10^2 * 1 <= grid[:,1].length <= 10^2 * grid[i][j] -> 0 \| 1 * 1 <= capacity <= 10 """ return sum([math.ceil(sum(arr)/capacity) for arr in grid])
def sort_array(arr): """ In this Kata, you have to sort an array of non-negative integers according to number of ones in their binary representation in ascending order. For similar number of ones, sort based on decimal value. It must be implemented like this: >>> sort_array([1, 5, 2, 3, 4]) == [1, 2, 3, 4, 5] >>> sort_array([-2, -3, -4, -5, -6]) == [-6, -5, -4, -3, -2] >>> sort_array([1, 0, 2, 3, 4]) [0, 1, 2, 3, 4] """ return sorted(sorted(arr), key=lambda x: bin(x)[2:].count('1'))
def select_words(s, n): """Given a string s and a natural number n, you have been tasked to implement a function that returns a list of all words from string s that contain exactly n consonants, in order these words appear in the string s. If the string s is empty then the function should return an empty list. Note: you may assume the input string contains only letters and spaces. Examples: select_words("Mary had a little lamb", 4) ==> ["little"] select_words("Mary had a little lamb", 3) ==> ["Mary", "lamb"] select_words("simple white space", 2) ==> [] select_words("Hello world", 4) ==> ["world"] select_words("Uncle sam", 3) ==> ["Uncle"] """ result = [] for word in s.split(): n_consonants = 0 for i in range(0, len(word)): if word[i].lower() not in ["a","e","i","o","u"]: n_consonants += 1 if n_consonants == n: result.append(word) return result
def get_closest_vowel(word): """You are given a word. Your task is to find the closest vowel that stands between two consonants from the right side of the word (case sensitive). Vowels in the beginning and ending doesn't count. Return empty string if you didn't find any vowel met the above condition. You may assume that the given string contains English letter only. Example: get_closest_vowel("yogurt") ==> "u" get_closest_vowel("FULL") ==> "U" get_closest_vowel("quick") ==> "" get_closest_vowel("ab") ==> "" """ if len(word) < 3: return "" vowels = {"a", "e", "i", "o", "u", "A", "E", 'O', 'U', 'I'} for i in range(len(word)-2, 0, -1): if word[i] in vowels: if (word[i+1] not in vowels) and (word[i-1] not in vowels): return word[i] return ""
def match_parens(lst): ''' You are given a list of two strings, both strings consist of open parentheses '(' or close parentheses ')' only. Your job is to check if it is possible to concatenate the two strings in some order, that the resulting string will be good. A string S is considered to be good if and only if all parentheses in S are balanced. For example: the string '(())()' is good, while the string '())' is not. Return 'Yes' if there's a way to make a good string, and return 'No' otherwise. Examples: match_parens(['()(', ')']) == 'Yes' match_parens([')', ')']) == 'No' ''' def check(s): val = 0 for i in s: if i == '(': val = val + 1 else: val = val - 1 if val < 0: return False return True if val == 0 else False S1 = lst[0] + lst[1] S2 = lst[1] + lst[0] return 'Yes' if check(S1) or check(S2) else 'No'
def maximum(arr, k): """ Given an array arr of integers and a positive integer k, return a sorted list of length k with the maximum k numbers in arr. Example 1: Input: arr = [-3, -4, 5], k = 3 Output: [-4, -3, 5] Example 2: Input: arr = [4, -4, 4], k = 2 Output: [4, 4] Example 3: Input: arr = [-3, 2, 1, 2, -1, -2, 1], k = 1 Output: [2] Note: 1. The length of the array will be in the range of [1, 1000]. 2. The elements in the array will be in the range of [-1000, 1000]. 3. 0 <= k <= len(arr) """ if k == 0: return [] arr.sort() ans = arr[-k:] return ans
def solution(lst): """Given a non-empty list of integers, return the sum of all of the odd elements that are in even positions. Examples solution([5, 8, 7, 1]) ==> 12 solution([3, 3, 3, 3, 3]) ==> 9 solution([30, 13, 24, 321]) ==>0 """ return sum([x for idx, x in enumerate(lst) if idx%2==0 and x%2==1])
def add_elements(arr, k): """ Given a non-empty array of integers arr and an integer k, return the sum of the elements with at most two digits from the first k elements of arr. Example: Input: arr = [111,21,3,4000,5,6,7,8,9], k = 4 Output: 24 # sum of 21 + 3 Constraints: 1. 1 <= len(arr) <= 100 2. 1 <= k <= len(arr) """ return sum(elem for elem in arr[:k] if len(str(elem)) <= 2)
def get_odd_collatz(n): """ Given a positive integer n, return a sorted list that has the odd numbers in collatz sequence. The Collatz conjecture is a conjecture in mathematics that concerns a sequence defined as follows: start with any positive integer n. Then each term is obtained from the previous term as follows: if the previous term is even, the next term is one half of the previous term. If the previous term is odd, the next term is 3 times the previous term plus 1. The conjecture is that no matter what value of n, the sequence will always reach 1. Note: 1. Collatz(1) is [1]. 2. returned list sorted in increasing order. For example: get_odd_collatz(5) returns [1, 5] # The collatz sequence for 5 is [5, 16, 8, 4, 2, 1], so the odd numbers are only 1, and 5. """ if n%2==0: odd_collatz = [] else: odd_collatz = [n] while n > 1: if n % 2 == 0: n = n/2 else: n = n*3 + 1 if n%2 == 1: odd_collatz.append(int(n)) return sorted(odd_collatz)
def valid_date(date): """You have to write a function which validates a given date string and returns True if the date is valid otherwise False. The date is valid if all of the following rules are satisfied: 1. The date string is not empty. 2. The number of days is not less than 1 or higher than 31 days for months 1,3,5,7,8,10,12. And the number of days is not less than 1 or higher than 30 days for months 4,6,9,11. And, the number of days is not less than 1 or higher than 29 for the month 2. 3. The months should not be less than 1 or higher than 12. 4. The date should be in the format: mm-dd-yyyy for example: valid_date('03-11-2000') => True valid_date('15-01-2012') => False valid_date('04-0-2040') => False valid_date('06-04-2020') => True valid_date('06/04/2020') => False """ try: date = date.strip() month, day, year = date.split('-') month, day, year = int(month), int(day), int(year) if month < 1 or month > 12: return False if month in [1,3,5,7,8,10,12] and day < 1 or day > 31: return False if month in [4,6,9,11] and day < 1 or day > 30: return False if month == 2 and day < 1 or day > 29: return False except: return False return True
def split_words(txt): ''' Given a string of words, return a list of words split on whitespace, if no whitespaces exists in the text you should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25 Examples split_words("Hello world!") ➞ ["Hello", "world!"] split_words("Hello,world!") ➞ ["Hello", "world!"] split_words("abcdef") == 3 ''' if " " in txt: return txt.split() elif "," in txt: return txt.replace(',',' ').split() else: return len([i for i in txt if i.islower() and ord(i)%2 == 0])
def is_sorted(lst): ''' Given a list of numbers, return whether or not they are sorted in ascending order. If list has more than 1 duplicate of the same number, return False. Assume no negative numbers and only integers. Examples is_sorted([5]) ➞ True is_sorted([1, 2, 3, 4, 5]) ➞ True is_sorted([1, 3, 2, 4, 5]) ➞ False is_sorted([1, 2, 3, 4, 5, 6]) ➞ True is_sorted([1, 2, 3, 4, 5, 6, 7]) ➞ True is_sorted([1, 3, 2, 4, 5, 6, 7]) ➞ False is_sorted([1, 2, 2, 3, 3, 4]) ➞ True is_sorted([1, 2, 2, 2, 3, 4]) ➞ False ''' count_digit = dict([(i, 0) for i in lst]) for i in lst: count_digit[i]+=1 if any(count_digit[i] > 2 for i in lst): return False if all(lst[i-1] <= lst[i] for i in range(1, len(lst))): return True else: return False
def intersection(interval1, interval2): """You are given two intervals, where each interval is a pair of integers. For example, interval = (start, end) = (1, 2). The given intervals are closed which means that the interval (start, end) includes both start and end. For each given interval, it is assumed that its start is less or equal its end. Your task is to determine whether the length of intersection of these two intervals is a prime number. Example, the intersection of the intervals (1, 3), (2, 4) is (2, 3) which its length is 1, which not a prime number. If the length of the intersection is a prime number, return "YES", otherwise, return "NO". If the two intervals don't intersect, return "NO". [input/output] samples: intersection((1, 2), (2, 3)) ==> "NO" intersection((-1, 1), (0, 4)) ==> "NO" intersection((-3, -1), (-5, 5)) ==> "YES" """ def is_prime(num): if num == 1 or num == 0: return False if num == 2: return True for i in range(2, num): if num%i == 0: return False return True l = max(interval1[0], interval2[0]) r = min(interval1[1], interval2[1]) length = r - l if length > 0 and is_prime(length): return "YES" return "NO"
def prod_signs(arr): """ You are given an array arr of integers and you need to return sum of magnitudes of integers multiplied by product of all signs of each number in the array, represented by 1, -1 or 0. Note: return None for empty arr. Example: >>> prod_signs([1, 2, 2, -4]) == -9 >>> prod_signs([0, 1]) == 0 >>> prod_signs([]) == None """ if not arr: return None prod = 0 if 0 in arr else (-1) ** len(list(filter(lambda x: x < 0, arr))) return prod * sum([abs(i) for i in arr])
def minPath(grid, k): """ Given a grid with N rows and N columns (N >= 2) and a positive integer k, each cell of the grid contains a value. Every integer in the range [1, N * N] inclusive appears exactly once on the cells of the grid. You have to find the minimum path of length k in the grid. You can start from any cell, and in each step you can move to any of the neighbor cells, in other words, you can go to cells which share an edge with you current cell. Please note that a path of length k means visiting exactly k cells (not necessarily distinct). You CANNOT go off the grid. A path A (of length k) is considered less than a path B (of length k) if after making the ordered lists of the values on the cells that A and B go through (let's call them lst_A and lst_B), lst_A is lexicographically less than lst_B, in other words, there exist an integer index i (1 <= i <= k) such that lst_A[i] < lst_B[i] and for any j (1 <= j < i) we have lst_A[j] = lst_B[j]. It is guaranteed that the answer is unique. Return an ordered list of the values on the cells that the minimum path go through. Examples: Input: grid = [ [1,2,3], [4,5,6], [7,8,9]], k = 3 Output: [1, 2, 1] Input: grid = [ [5,9,3], [4,1,6], [7,8,2]], k = 1 Output: [1] """ n = len(grid) val = n * n + 1 for i in range(n): for j in range(n): if grid[i][j] == 1: temp = [] if i != 0: temp.append(grid[i - 1][j]) if j != 0: temp.append(grid[i][j - 1]) if i != n - 1: temp.append(grid[i + 1][j]) if j != n - 1: temp.append(grid[i][j + 1]) val = min(temp) ans = [] for i in range(k): if i % 2 == 0: ans.append(1) else: ans.append(val) return ans
def tri(n): """Everyone knows Fibonacci sequence, it was studied deeply by mathematicians in the last couple centuries. However, what people don't know is Tribonacci sequence. Tribonacci sequence is defined by the recurrence: tri(1) = 3 tri(n) = 1 + n / 2, if n is even. tri(n) = tri(n - 1) + tri(n - 2) + tri(n + 1), if n is odd. For example: tri(2) = 1 + (2 / 2) = 2 tri(4) = 3 tri(3) = tri(2) + tri(1) + tri(4) = 2 + 3 + 3 = 8 You are given a non-negative integer number n, you have to a return a list of the first n + 1 numbers of the Tribonacci sequence. Examples: tri(3) = [1, 3, 2, 8] """ if n == 0: return [1] my_tri = [1, 3] for i in range(2, n + 1): if i % 2 == 0: my_tri.append(i / 2 + 1) else: my_tri.append(my_tri[i - 1] + my_tri[i - 2] + (i + 3) / 2) return my_tri
def digits(n): """Given a positive integer n, return the product of the odd digits. Return 0 if all digits are even. For example: digits(1) == 1 digits(4) == 0 digits(235) == 15 """ product = 1 odd_count = 0 for digit in str(n): int_digit = int(digit) if int_digit%2 == 1: product= product*int_digit odd_count+=1 if odd_count ==0: return 0 else: return product
def is_nested(string): ''' Create a function that takes a string as input which contains only square brackets. The function should return True if and only if there is a valid subsequence of brackets where at least one bracket in the subsequence is nested. is_nested('[[]]') ➞ True is_nested('[]]]]]]][[[[[]') ➞ False is_nested('[][]') ➞ False is_nested('[]') ➞ False is_nested('[[][]]') ➞ True is_nested('[[]][[') ➞ True ''' opening_bracket_index = [] closing_bracket_index = [] for i in range(len(string)): if string[i] == '[': opening_bracket_index.append(i) else: closing_bracket_index.append(i) closing_bracket_index.reverse() cnt = 0 i = 0 l = len(closing_bracket_index) for idx in opening_bracket_index: if i < l and idx < closing_bracket_index[i]: cnt += 1 i += 1 return cnt >= 2
def sum_squares(lst): """You are given a list of numbers. You need to return the sum of squared numbers in the given list, round each element in the list to the upper int(Ceiling) first. Examples: For lst = [1,2,3] the output should be 14 For lst = [1,4,9] the output should be 98 For lst = [1,3,5,7] the output should be 84 For lst = [1.4,4.2,0] the output should be 29 For lst = [-2.4,1,1] the output should be 6 """ import math squared = 0 for i in lst: squared += math.ceil(i)**2 return squared
def check_if_last_char_is_a_letter(txt): ''' Create a function that returns True if the last character of a given string is an alphabetical character and is not a part of a word, and False otherwise. Note: "word" is a group of characters separated by space. Examples: check_if_last_char_is_a_letter("apple pie") ➞ False check_if_last_char_is_a_letter("apple pi e") ➞ True check_if_last_char_is_a_letter("apple pi e ") ➞ False check_if_last_char_is_a_letter("") ➞ False ''' check = txt.split(' ')[-1] return True if len(check) == 1 and (97 <= ord(check.lower()) <= 122) else False
def can_arrange(arr): """Create a function which returns the largest index of an element which is not greater than or equal to the element immediately preceding it. If no such element exists then return -1. The given array will not contain duplicate values. Examples: can_arrange([1,2,4,3,5]) = 3 can_arrange([1,2,3]) = -1 """ ind=-1 i=1 while i<len(arr): if arr[i]<arr[i-1]: ind=i i+=1 return ind
def largest_smallest_integers(lst): ''' Create a function that returns a tuple (a, b), where 'a' is the largest of negative integers, and 'b' is the smallest of positive integers in a list. If there is no negative or positive integers, return them as None. Examples: largest_smallest_integers([2, 4, 1, 3, 5, 7]) == (None, 1) largest_smallest_integers([]) == (None, None) largest_smallest_integers([0]) == (None, None) ''' smallest = list(filter(lambda x: x < 0, lst)) largest = list(filter(lambda x: x > 0, lst)) return (max(smallest) if smallest else None, min(largest) if largest else None)
def compare_one(a, b): """ Create a function that takes integers, floats, or strings representing real numbers, and returns the larger variable in its given variable type. Return None if the values are equal. Note: If a real number is represented as a string, the floating point might be . or , compare_one(1, 2.5) ➞ 2.5 compare_one(1, "2,3") ➞ "2,3" compare_one("5,1", "6") ➞ "6" compare_one("1", 1) ➞ None """ temp_a, temp_b = a, b if isinstance(temp_a, str): temp_a = temp_a.replace(',','.') if isinstance(temp_b, str): temp_b = temp_b.replace(',','.') if float(temp_a) == float(temp_b): return None return a if float(temp_a) > float(temp_b) else b
def is_equal_to_sum_even(n): """Evaluate whether the given number n can be written as the sum of exactly 4 positive even numbers Example is_equal_to_sum_even(4) == False is_equal_to_sum_even(6) == False is_equal_to_sum_even(8) == True """ return n%2 == 0 and n >= 8
def special_factorial(n): """The Brazilian factorial is defined as: brazilian_factorial(n) = n! * (n-1)! * (n-2)! * ... * 1! where n > 0 For example: >>> special_factorial(4) 288 The function will receive an integer as input and should return the special factorial of this integer. """ fact_i = 1 special_fact = 1 for i in range(1, n+1): fact_i = i special_fact = fact_i return special_fact
def fix_spaces(text): """ Given a string text, replace all spaces in it with underscores, and if a string has more than 2 consecutive spaces, then replace all consecutive spaces with - fix_spaces("Example") == "Example" fix_spaces("Example 1") == "Example_1" fix_spaces(" Example 2") == "_Example_2" fix_spaces(" Example 3") == "_Example-3" """ new_text = "" i = 0 start, end = 0, 0 while i < len(text): if text[i] == " ": end += 1 else: if end - start > 2: new_text += "-"+text[i] elif end - start > 0: new_text += "_"*(end - start)+text[i] else: new_text += text[i] start, end = i+1, i+1 i+=1 if end - start > 2: new_text += "-" elif end - start > 0: new_text += "_" return new_text
def file_name_check(file_name): """Create a function which takes a string representing a file's name, and returns 'Yes' if the the file's name is valid, and returns 'No' otherwise. A file's name is considered to be valid if and only if all the following conditions are met: - There should not be more than three digits ('0'-'9') in the file's name. - The file's name contains exactly one dot '.' - The substring before the dot should not be empty, and it starts with a letter from the latin alphapet ('a'-'z' and 'A'-'Z'). - The substring after the dot should be one of these: ['txt', 'exe', 'dll'] Examples: file_name_check("example.txt") # => 'Yes' file_name_check("1example.dll") # => 'No' (the name should start with a latin alphapet letter) """ suf = ['txt', 'exe', 'dll'] lst = file_name.split(sep='.') if len(lst) != 2: return 'No' if not lst[1] in suf: return 'No' if len(lst[0]) == 0: return 'No' if not lst[0][0].isalpha(): return 'No' t = len([x for x in lst[0] if x.isdigit()]) if t > 3: return 'No' return 'Yes'
def sum_squares(lst): """" This function will take a list of integers. For all entries in the list, the function shall square the integer entry if its index is a multiple of 3 and will cube the integer entry if its index is a multiple of 4 and not a multiple of 3. The function will not change the entries in the list whose indexes are not a multiple of 3 or 4. The function shall then return the sum of all entries. Examples: For lst = [1,2,3] the output should be 6 For lst = [] the output should be 0 For lst = [-1,-5,2,-1,-5] the output should be -126 """ result =[] for i in range(len(lst)): if i %3 == 0: result.append(lst[i]2) elif i % 4 == 0 and i%3 != 0: result.append(lst[i]3) else: result.append(lst[i]) return sum(result)
def words_in_sentence(sentence): """ You are given a string representing a sentence, the sentence contains some words separated by a space, and you have to return a string that contains the words from the original sentence, whose lengths are prime numbers, the order of the words in the new string should be the same as the original one. Example 1: Input: sentence = "This is a test" Output: "is" Example 2: Input: sentence = "lets go for swimming" Output: "go for" Constraints: * 1 <= len(sentence) <= 100 * sentence contains only letters """ new_lst = [] for word in sentence.split(): flg = 0 if len(word) == 1: flg = 1 for i in range(2, len(word)): if len(word)%i == 0: flg = 1 if flg == 0 or len(word) == 2: new_lst.append(word) return " ".join(new_lst)
def simplify(x, n): """Your task is to implement a function that will simplify the expression x * n. The function returns True if x * n evaluates to a whole number and False otherwise. Both x and n, are string representation of a fraction, and have the following format, <numerator>/<denominator> where both numerator and denominator are positive whole numbers. You can assume that x, and n are valid fractions, and do not have zero as denominator. simplify("1/5", "5/1") = True simplify("1/6", "2/1") = False simplify("7/10", "10/2") = False """ a, b = x.split("/") c, d = n.split("/") numerator = int(a) * int(c) denom = int(b) * int(d) if (numerator/denom == int(numerator/denom)): return True return False
def order_by_points(nums): """ Write a function which sorts the given list of integers in ascending order according to the sum of their digits. Note: if there are several items with similar sum of their digits, order them based on their index in original list. For example: >>> order_by_points([1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11] >>> order_by_points([]) == [] """ def digits_sum(n): neg = 1 if n < 0: n, neg = -1 * n, -1 n = [int(i) for i in str(n)] n[0] = n[0] * neg return sum(n) return sorted(nums, key=digits_sum)
def specialFilter(nums): """Write a function that takes an array of numbers as input and returns the number of elements in the array that are greater than 10 and both first and last digits of a number are odd (1, 3, 5, 7, 9). For example: specialFilter([15, -73, 14, -15]) => 1 specialFilter([33, -2, -3, 45, 21, 109]) => 2 """ count = 0 for num in nums: if num > 10: odd_digits = (1, 3, 5, 7, 9) number_as_string = str(num) if int(number_as_string[0]) in odd_digits and int(number_as_string[-1]) in odd_digits: count += 1 return count
def get_max_triples(n): """ You are given a positive integer n. You have to create an integer array a of length n. For each i (1 ≤ i ≤ n), the value of a[i] = i * i - i + 1. Return the number of triples (a[i], a[j], a[k]) of a where i < j < k, and a[i] + a[j] + a[k] is a multiple of 3. Example : Input: n = 5 Output: 1 Explanation: a = [1, 3, 7, 13, 21] The only valid triple is (1, 7, 13). """ A = [i*i - i + 1 for i in range(1,n+1)] ans = [] for i in range(n): for j in range(i+1,n): for k in range(j+1,n): if (A[i]+A[j]+A[k])%3 == 0: ans += [(A[i],A[j],A[k])] return len(ans)
def bf(planet1, planet2): ''' There are eight planets in our solar system: the closerst to the Sun is Mercury, the next one is Venus, then Earth, Mars, Jupiter, Saturn, Uranus, Neptune. Write a function that takes two planet names as strings planet1 and planet2. The function should return a tuple containing all planets whose orbits are located between the orbit of planet1 and the orbit of planet2, sorted by the proximity to the sun. The function should return an empty tuple if planet1 or planet2 are not correct planet names. Examples bf("Jupiter", "Neptune") ==> ("Saturn", "Uranus") bf("Earth", "Mercury") ==> ("Venus") bf("Mercury", "Uranus") ==> ("Venus", "Earth", "Mars", "Jupiter", "Saturn") ''' planet_names = ("Mercury", "Venus", "Earth", "Mars", "Jupiter", "Saturn", "Uranus", "Neptune") if planet1 not in planet_names or planet2 not in planet_names or planet1 == planet2: return () planet1_index = planet_names.index(planet1) planet2_index = planet_names.index(planet2) if planet1_index < planet2_index: return (planet_names[planet1_index + 1: planet2_index]) else: return (planet_names[planet2_index + 1 : planet1_index])
def sorted_list_sum(lst): """Write a function that accepts a list of strings as a parameter, deletes the strings that have odd lengths from it, and returns the resulted list with a sorted order, The list is always a list of strings and never an array of numbers, and it may contain duplicates. The order of the list should be ascending by length of each word, and you should return the list sorted by that rule. If two words have the same length, sort the list alphabetically. The function should return a list of strings in sorted order. You may assume that all words will have the same length. For example: assert list_sort(["aa", "a", "aaa"]) => ["aa"] assert list_sort(["ab", "a", "aaa", "cd"]) => ["ab", "cd"] """ lst.sort() new_lst = [] for i in lst: if len(i)%2 == 0: new_lst.append(i) return sorted(new_lst, key=len)
def x_or_y(n, x, y): """A simple program which should return the value of x if n is a prime number and should return the value of y otherwise. Examples: for x_or_y(7, 34, 12) == 34 for x_or_y(15, 8, 5) == 5 """ if n == 1: return y for i in range(2, n): if n % i == 0: return y break else: return x
def double_the_difference(lst): ''' Given a list of numbers, return the sum of squares of the numbers in the list that are odd. Ignore numbers that are negative or not integers. double_the_difference([1, 3, 2, 0]) == 1 + 9 + 0 + 0 = 10 double_the_difference([-1, -2, 0]) == 0 double_the_difference([9, -2]) == 81 double_the_difference([0]) == 0 If the input list is empty, return 0. ''' return sum([i**2 for i in lst if i > 0 and i%2!=0 and "." not in str(i)])
def compare(game,guess): """I think we all remember that feeling when the result of some long-awaited event is finally known. The feelings and thoughts you have at that moment are definitely worth noting down and comparing. Your task is to determine if a person correctly guessed the results of a number of matches. You are given two arrays of scores and guesses of equal length, where each index shows a match. Return an array of the same length denoting how far off each guess was. If they have guessed correctly, the value is 0, and if not, the value is the absolute difference between the guess and the score. example: compare([1,2,3,4,5,1],[1,2,3,4,2,-2]) -> [0,0,0,0,3,3] compare([0,5,0,0,0,4],[4,1,1,0,0,-2]) -> [4,4,1,0,0,6] """ return [abs(x-y) for x,y in zip(game,guess)]
def Strongest_Extension(class_name, extensions): """You will be given the name of a class (a string) and a list of extensions. The extensions are to be used to load additional classes to the class. The strength of the extension is as follows: Let CAP be the number of the uppercase letters in the extension's name, and let SM be the number of lowercase letters in the extension's name, the strength is given by the fraction CAP - SM. You should find the strongest extension and return a string in this format: ClassName.StrongestExtensionName. If there are two or more extensions with the same strength, you should choose the one that comes first in the list. For example, if you are given "Slices" as the class and a list of the extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension (its strength is -1). Example: for Strongest_Extension('my_class', ['AA', 'Be', 'CC']) == 'my_class.AA' """ strong = extensions[0] my_val = len([x for x in extensions[0] if x.isalpha() and x.isupper()]) - len([x for x in extensions[0] if x.isalpha() and x.islower()]) for s in extensions: val = len([x for x in s if x.isalpha() and x.isupper()]) - len([x for x in s if x.isalpha() and x.islower()]) if val > my_val: strong = s my_val = val ans = class_name + "." + strong return ans
def cycpattern_check(a , b): """You are given 2 words. You need to return True if the second word or any of its rotations is a substring in the first word cycpattern_check("abcd","abd") => False cycpattern_check("hello","ell") => True cycpattern_check("whassup","psus") => False cycpattern_check("abab","baa") => True cycpattern_check("efef","eeff") => False cycpattern_check("himenss","simen") => True """ l = len(b) pat = b + b for i in range(len(a) - l + 1): for j in range(l + 1): if a[i:i+l] == pat[j:j+l]: return True return False
def even_odd_count(num): """Given an integer. return a tuple that has the number of even and odd digits respectively. Example: even_odd_count(-12) ==> (1, 1) even_odd_count(123) ==> (1, 2) """ even_count = 0 odd_count = 0 for i in str(abs(num)): if int(i)%2==0: even_count +=1 else: odd_count +=1 return (even_count, odd_count)
def int_to_mini_roman(number): """ Given a positive integer, obtain its roman numeral equivalent as a string, and return it in lowercase. Restrictions: 1 <= num <= 1000 Examples: >>> int_to_mini_roman(19) == 'xix' >>> int_to_mini_roman(152) == 'clii' >>> int_to_mini_roman(426) == 'cdxxvi' """ num = [1, 4, 5, 9, 10, 40, 50, 90, 100, 400, 500, 900, 1000] sym = ["I", "IV", "V", "IX", "X", "XL", "L", "XC", "C", "CD", "D", "CM", "M"] i = 12 res = '' while number: div = number // num[i] number %= num[i] while div: res += sym[i] div -= 1 i -= 1 return res.lower()
def right_angle_triangle(a, b, c): ''' Given the lengths of the three sides of a triangle. Return True if the three sides form a right-angled triangle, False otherwise. A right-angled triangle is a triangle in which one angle is right angle or 90 degree. Example: right_angle_triangle(3, 4, 5) == True right_angle_triangle(1, 2, 3) == False ''' return aa == bb + cc or bb == aa + cc or cc == aa + b*b
def find_max(words): """Write a function that accepts a list of strings. The list contains different words. Return the word with maximum number of unique characters. If multiple strings have maximum number of unique characters, return the one which comes first in lexicographical order. find_max(["name", "of", "string"]) == "string" find_max(["name", "enam", "game"]) == "enam" find_max(["aaaaaaa", "bb" ,"cc"]) == ""aaaaaaa" """ return sorted(words, key = lambda x: (-len(set(x)), x))[0]
def eat(number, need, remaining): """ You're a hungry rabbit, and you already have eaten a certain number of carrots, but now you need to eat more carrots to complete the day's meals. you should return an array of [ total number of eaten carrots after your meals, the number of carrots left after your meals ] if there are not enough remaining carrots, you will eat all remaining carrots, but will still be hungry. Example: * eat(5, 6, 10) -> [11, 4] * eat(4, 8, 9) -> [12, 1] * eat(1, 10, 10) -> [11, 0] * eat(2, 11, 5) -> [7, 0] Variables: @number : integer the number of carrots that you have eaten. @need : integer the number of carrots that you need to eat. @remaining : integer the number of remaining carrots thet exist in stock Constrain: * 0 <= number <= 1000 * 0 <= need <= 1000 * 0 <= remaining <= 1000 Have fun :) """ if(need <= remaining): return [ number + need , remaining-need ] else: return [ number + remaining , 0]
def do_algebra(operator, operand): """ Given two lists operator, and operand. The first list has basic algebra operations, and the second list is a list of integers. Use the two given lists to build the algebric expression and return the evaluation of this expression. The basic algebra operations: Addition ( + ) Subtraction ( - ) Multiplication ( * ) Floor division ( // ) Exponentiation ( ** ) Example: operator['+', '', '-'] array = [2, 3, 4, 5] result = 2 + 3 4 - 5 => result = 9 Note: The length of operator list is equal to the length of operand list minus one. Operand is a list of of non-negative integers. Operator list has at least one operator, and operand list has at least two operands. """ expression = str(operand[0]) for oprt, oprn in zip(operator, operand[1:]): expression+= oprt + str(oprn) return eval(expression)
def solve(s): """You are given a string s. if s[i] is a letter, reverse its case from lower to upper or vise versa, otherwise keep it as it is. If the string contains no letters, reverse the string. The function should return the resulted string. Examples solve("1234") = "4321" solve("ab") = "AB" solve("#a@C") = "#A@c" """ flg = 0 idx = 0 new_str = list(s) for i in s: if i.isalpha(): new_str[idx] = i.swapcase() flg = 1 idx += 1 s = "" for i in new_str: s += i if flg == 0: return s[len(s)::-1] return s
def string_to_md5(text): """ Given a string 'text', return its md5 hash equivalent string. If 'text' is an empty string, return None. >>> string_to_md5('Hello world') == '3e25960a79dbc69b674cd4ec67a72c62' """ import hashlib return hashlib.md5(text.encode('ascii')).hexdigest() if text else None
def generate_integers(a, b): """ Given two positive integers a and b, return the even digits between a and b, in ascending order. For example: generate_integers(2, 8) => [2, 4, 6, 8] generate_integers(8, 2) => [2, 4, 6, 8] generate_integers(10, 14) => [] """ lower = max(2, min(a, b)) upper = min(8, max(a, b)) return [i for i in range(lower, upper+1) if i % 2 == 0]

def make_a_pile(n): """ Given a positive integer n, you have to make a pile of n levels of stones. The first level has n stones. The number of stones in the next level is: - the next odd number if n is odd. - the next even number if n is even. Return the number of stones in each level in a list, where element at index i represents the number of stones in the level (i+1). Examples: >>> make_a_pile(3) [3, 5, 7] """ return [n + 2*i for i in range(n)]

def words_string(s): """ You will be given a string of words separated by commas or spaces. Your task is to split the string into words and return an array of the words. For example: words_string("Hi, my name is John") == ["Hi", "my", "name", "is", "John"] words_string("One, two, three, four, five, six") == ["One", "two", "three", "four", "five", "six"] """ if not s: return [] s_list = [] for letter in s: if letter == ',': s_list.append(' ') else: s_list.append(letter) s_list = "".join(s_list) return s_list.split()

def choose_num(x, y): """This function takes two positive numbers x and y and returns the biggest even integer number that is in the range [x, y] inclusive. If there's no such number, then the function should return -1. For example: choose_num(12, 15) = 14 choose_num(13, 12) = -1 """ if x > y: return -1 if y % 2 == 0: return y if x == y: return -1 return y - 1

def rounded_avg(n, m): """You are given two positive integers n and m, and your task is to compute the average of the integers from n through m (including n and m). Round the answer to the nearest integer and convert that to binary. If n is greater than m, return -1. Example: rounded_avg(1, 5) => "0b11" rounded_avg(7, 5) => -1 rounded_avg(10, 20) => "0b1111" rounded_avg(20, 33) => "0b11010" """ if m < n: return -1 summation = 0 for i in range(n, m+1): summation += i return bin(round(summation/(m - n + 1)))

def unique_digits(x): """Given a list of positive integers x. return a sorted list of all elements that hasn't any even digit. Note: Returned list should be sorted in increasing order. For example: >>> unique_digits([15, 33, 1422, 1]) [1, 15, 33] >>> unique_digits([152, 323, 1422, 10]) [] """ odd_digit_elements = [] for i in x: if all (int(c) % 2 == 1 for c in str(i)): odd_digit_elements.append(i) return sorted(odd_digit_elements)

def by_length(arr): """ Given an array of integers, sort the integers that are between 1 and 9 inclusive, reverse the resulting array, and then replace each digit by its corresponding name from "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine". For example: arr = [2, 1, 1, 4, 5, 8, 2, 3] -> sort arr -> [1, 1, 2, 2, 3, 4, 5, 8] -> reverse arr -> [8, 5, 4, 3, 2, 2, 1, 1] return ["Eight", "Five", "Four", "Three", "Two", "Two", "One", "One"] If the array is empty, return an empty array: arr = [] return [] If the array has any strange number ignore it: arr = [1, -1 , 55] -> sort arr -> [-1, 1, 55] -> reverse arr -> [55, 1, -1] return = ['One'] """ dic = { 1: "One", 2: "Two", 3: "Three", 4: "Four", 5: "Five", 6: "Six", 7: "Seven", 8: "Eight", 9: "Nine", } sorted_arr = sorted(arr, reverse=True) new_arr = [] for var in sorted_arr: try: new_arr.append(dic[var]) except: pass return new_arr

def f(n): """ Implement the function f that takes n as a parameter, and returns a list of size n, such that the value of the element at index i is the factorial of i if i is even or the sum of numbers from 1 to i otherwise. i starts from 1. the factorial of i is the multiplication of the numbers from 1 to i (1 * 2 * ... * i). Example: f(5) == [1, 2, 6, 24, 15] """ ret = [] for i in range(1,n+1): if i%2 == 0: x = 1 for j in range(1,i+1): x *= j ret += [x] else: x = 0 for j in range(1,i+1): x += j ret += [x] return ret

def even_odd_palindrome(n): """ Given a positive integer n, return a tuple that has the number of even and odd integer palindromes that fall within the range(1, n), inclusive. Example 1: Input: 3 Output: (1, 2) Explanation: Integer palindrome are 1, 2, 3. one of them is even, and two of them are odd. Example 2: Input: 12 Output: (4, 6) Explanation: Integer palindrome are 1, 2, 3, 4, 5, 6, 7, 8, 9, 11. four of them are even, and 6 of them are odd. Note: 1. 1 <= n <= 10^3 2. returned tuple has the number of even and odd integer palindromes respectively. """ def is_palindrome(n): return str(n) == str(n)[::-1] even_palindrome_count = 0 odd_palindrome_count = 0 for i in range(1, n+1): if i%2 == 1 and is_palindrome(i): odd_palindrome_count += 1 elif i%2 == 0 and is_palindrome(i): even_palindrome_count += 1 return (even_palindrome_count, odd_palindrome_count)

def count_nums(arr): """ Write a function count_nums which takes an array of integers and returns the number of elements which has a sum of digits > 0. If a number is negative, then its first signed digit will be negative: e.g. -123 has signed digits -1, 2, and 3. >>> count_nums([]) == 0 >>> count_nums([-1, 11, -11]) == 1 >>> count_nums([1, 1, 2]) == 3 """ def digits_sum(n): neg = 1 if n < 0: n, neg = -1 * n, -1 n = [int(i) for i in str(n)] n[0] = n[0] * neg return sum(n) return len(list(filter(lambda x: x > 0, [digits_sum(i) for i in arr])))

def move_one_ball(arr): """We have an array 'arr' of N integers arr[1], arr[2], ..., arr[N].The numbers in the array will be randomly ordered. Your task is to determine if it is possible to get an array sorted in non-decreasing order by performing the following operation on the given array: You are allowed to perform right shift operation any number of times. One right shift operation means shifting all elements of the array by one position in the right direction. The last element of the array will be moved to the starting position in the array i.e. 0th index. If it is possible to obtain the sorted array by performing the above operation then return True else return False. If the given array is empty then return True. Note: The given list is guaranteed to have unique elements. For Example: move_one_ball([3, 4, 5, 1, 2])==>True Explanation: By performin 2 right shift operations, non-decreasing order can be achieved for the given array. move_one_ball([3, 5, 4, 1, 2])==>False Explanation:It is not possible to get non-decreasing order for the given array by performing any number of right shift operations. """ if len(arr)==0: return True sorted_array=sorted(arr) my_arr=[] min_value=min(arr) min_index=arr.index(min_value) my_arr=arr[min_index:]+arr[0:min_index] for i in range(len(arr)): if my_arr[i]!=sorted_array[i]: return False return True

def exchange(lst1, lst2): """In this problem, you will implement a function that takes two lists of numbers, and determines whether it is possible to perform an exchange of elements between them to make lst1 a list of only even numbers. There is no limit on the number of exchanged elements between lst1 and lst2. If it is possible to exchange elements between the lst1 and lst2 to make all the elements of lst1 to be even, return "YES". Otherwise, return "NO". For example: exchange([1, 2, 3, 4], [1, 2, 3, 4]) => "YES" exchange([1, 2, 3, 4], [1, 5, 3, 4]) => "NO" It is assumed that the input lists will be non-empty. """ odd = 0 even = 0 for i in lst1: if i%2 == 1: odd += 1 for i in lst2: if i%2 == 0: even += 1 if even >= odd: return "YES" return "NO"

def histogram(test): """Given a string representing a space separated lowercase letters, return a dictionary of the letter with the most repetition and containing the corresponding count. If several letters have the same occurrence, return all of them. Example: histogram('a b c') == {'a': 1, 'b': 1, 'c': 1} histogram('a b b a') == {'a': 2, 'b': 2} histogram('a b c a b') == {'a': 2, 'b': 2} histogram('b b b b a') == {'b': 4} histogram('') == {} """ dict1={} list1=test.split(" ") t=0 for i in list1: if(list1.count(i)>t) and i!='': t=list1.count(i) if t>0: for i in list1: if(list1.count(i)==t): dict1[i]=t return dict1

def reverse_delete(s,c): """Task We are given two strings s and c, you have to deleted all the characters in s that are equal to any character in c then check if the result string is palindrome. A string is called palindrome if it reads the same backward as forward. You should return a tuple containing the result string and True/False for the check. Example For s = "abcde", c = "ae", the result should be ('bcd',False) For s = "abcdef", c = "b" the result should be ('acdef',False) For s = "abcdedcba", c = "ab", the result should be ('cdedc',True) """ s = ''.join([char for char in s if char not in c]) return (s,s[::-1] == s)

def odd_count(lst): """Given a list of strings, where each string consists of only digits, return a list. Each element i of the output should be "the number of odd elements in the string i of the input." where all the i's should be replaced by the number of odd digits in the i'th string of the input. >>> odd_count(['1234567']) ["the number of odd elements 4n the str4ng 4 of the 4nput."] >>> odd_count(['3',"11111111"]) ["the number of odd elements 1n the str1ng 1 of the 1nput.", "the number of odd elements 8n the str8ng 8 of the 8nput."] """ res = [] for arr in lst: n = sum(int(d)%2==1 for d in arr) res.append("the number of odd elements " + str(n) + "n the str"+ str(n) +"ng "+ str(n) +" of the "+ str(n) +"nput.") return res

def minSubArraySum(nums): """ Given an array of integers nums, find the minimum sum of any non-empty sub-array of nums. Example minSubArraySum([2, 3, 4, 1, 2, 4]) == 1 minSubArraySum([-1, -2, -3]) == -6 """ max_sum = 0 s = 0 for num in nums: s += -num if (s < 0): s = 0 max_sum = max(s, max_sum) if max_sum == 0: max_sum = max(-i for i in nums) min_sum = -max_sum return min_sum

def max_fill(grid, capacity): import math """ You are given a rectangular grid of wells. Each row represents a single well, and each 1 in a row represents a single unit of water. Each well has a corresponding bucket that can be used to extract water from it, and all buckets have the same capacity. Your task is to use the buckets to empty the wells. Output the number of times you need to lower the buckets. Example 1: Input: grid : [[0,0,1,0], [0,1,0,0], [1,1,1,1]] bucket_capacity : 1 Output: 6 Example 2: Input: grid : [[0,0,1,1], [0,0,0,0], [1,1,1,1], [0,1,1,1]] bucket_capacity : 2 Output: 5 Example 3: Input: grid : [[0,0,0], [0,0,0]] bucket_capacity : 5 Output: 0 Constraints: * all wells have the same length * 1 <= grid.length <= 10^2 * 1 <= grid[:,1].length <= 10^2 * grid[i][j] -> 0 | 1 * 1 <= capacity <= 10 """ return sum([math.ceil(sum(arr)/capacity) for arr in grid])

def sort_array(arr): """ In this Kata, you have to sort an array of non-negative integers according to number of ones in their binary representation in ascending order. For similar number of ones, sort based on decimal value. It must be implemented like this: >>> sort_array([1, 5, 2, 3, 4]) == [1, 2, 3, 4, 5] >>> sort_array([-2, -3, -4, -5, -6]) == [-6, -5, -4, -3, -2] >>> sort_array([1, 0, 2, 3, 4]) [0, 1, 2, 3, 4] """ return sorted(sorted(arr), key=lambda x: bin(x)[2:].count('1'))

def select_words(s, n): """Given a string s and a natural number n, you have been tasked to implement a function that returns a list of all words from string s that contain exactly n consonants, in order these words appear in the string s. If the string s is empty then the function should return an empty list. Note: you may assume the input string contains only letters and spaces. Examples: select_words("Mary had a little lamb", 4) ==> ["little"] select_words("Mary had a little lamb", 3) ==> ["Mary", "lamb"] select_words("simple white space", 2) ==> [] select_words("Hello world", 4) ==> ["world"] select_words("Uncle sam", 3) ==> ["Uncle"] """ result = [] for word in s.split(): n_consonants = 0 for i in range(0, len(word)): if word[i].lower() not in ["a","e","i","o","u"]: n_consonants += 1 if n_consonants == n: result.append(word) return result

def get_closest_vowel(word): """You are given a word. Your task is to find the closest vowel that stands between two consonants from the right side of the word (case sensitive). Vowels in the beginning and ending doesn't count. Return empty string if you didn't find any vowel met the above condition. You may assume that the given string contains English letter only. Example: get_closest_vowel("yogurt") ==> "u" get_closest_vowel("FULL") ==> "U" get_closest_vowel("quick") ==> "" get_closest_vowel("ab") ==> "" """ if len(word) < 3: return "" vowels = {"a", "e", "i", "o", "u", "A", "E", 'O', 'U', 'I'} for i in range(len(word)-2, 0, -1): if word[i] in vowels: if (word[i+1] not in vowels) and (word[i-1] not in vowels): return word[i] return ""

def match_parens(lst): ''' You are given a list of two strings, both strings consist of open parentheses '(' or close parentheses ')' only. Your job is to check if it is possible to concatenate the two strings in some order, that the resulting string will be good. A string S is considered to be good if and only if all parentheses in S are balanced. For example: the string '(())()' is good, while the string '())' is not. Return 'Yes' if there's a way to make a good string, and return 'No' otherwise. Examples: match_parens(['()(', ')']) == 'Yes' match_parens([')', ')']) == 'No' ''' def check(s): val = 0 for i in s: if i == '(': val = val + 1 else: val = val - 1 if val < 0: return False return True if val == 0 else False S1 = lst[0] + lst[1] S2 = lst[1] + lst[0] return 'Yes' if check(S1) or check(S2) else 'No'

def maximum(arr, k): """ Given an array arr of integers and a positive integer k, return a sorted list of length k with the maximum k numbers in arr. Example 1: Input: arr = [-3, -4, 5], k = 3 Output: [-4, -3, 5] Example 2: Input: arr = [4, -4, 4], k = 2 Output: [4, 4] Example 3: Input: arr = [-3, 2, 1, 2, -1, -2, 1], k = 1 Output: [2] Note: 1. The length of the array will be in the range of [1, 1000]. 2. The elements in the array will be in the range of [-1000, 1000]. 3. 0 <= k <= len(arr) """ if k == 0: return [] arr.sort() ans = arr[-k:] return ans

def solution(lst): """Given a non-empty list of integers, return the sum of all of the odd elements that are in even positions. Examples solution([5, 8, 7, 1]) ==> 12 solution([3, 3, 3, 3, 3]) ==> 9 solution([30, 13, 24, 321]) ==>0 """ return sum([x for idx, x in enumerate(lst) if idx%2==0 and x%2==1])

def add_elements(arr, k): """ Given a non-empty array of integers arr and an integer k, return the sum of the elements with at most two digits from the first k elements of arr. Example: Input: arr = [111,21,3,4000,5,6,7,8,9], k = 4 Output: 24 # sum of 21 + 3 Constraints: 1. 1 <= len(arr) <= 100 2. 1 <= k <= len(arr) """ return sum(elem for elem in arr[:k] if len(str(elem)) <= 2)

def get_odd_collatz(n): """ Given a positive integer n, return a sorted list that has the odd numbers in collatz sequence. The Collatz conjecture is a conjecture in mathematics that concerns a sequence defined as follows: start with any positive integer n. Then each term is obtained from the previous term as follows: if the previous term is even, the next term is one half of the previous term. If the previous term is odd, the next term is 3 times the previous term plus 1. The conjecture is that no matter what value of n, the sequence will always reach 1. Note: 1. Collatz(1) is [1]. 2. returned list sorted in increasing order. For example: get_odd_collatz(5) returns [1, 5] # The collatz sequence for 5 is [5, 16, 8, 4, 2, 1], so the odd numbers are only 1, and 5. """ if n%2==0: odd_collatz = [] else: odd_collatz = [n] while n > 1: if n % 2 == 0: n = n/2 else: n = n*3 + 1 if n%2 == 1: odd_collatz.append(int(n)) return sorted(odd_collatz)

def valid_date(date): """You have to write a function which validates a given date string and returns True if the date is valid otherwise False. The date is valid if all of the following rules are satisfied: 1. The date string is not empty. 2. The number of days is not less than 1 or higher than 31 days for months 1,3,5,7,8,10,12. And the number of days is not less than 1 or higher than 30 days for months 4,6,9,11. And, the number of days is not less than 1 or higher than 29 for the month 2. 3. The months should not be less than 1 or higher than 12. 4. The date should be in the format: mm-dd-yyyy for example: valid_date('03-11-2000') => True valid_date('15-01-2012') => False valid_date('04-0-2040') => False valid_date('06-04-2020') => True valid_date('06/04/2020') => False """ try: date = date.strip() month, day, year = date.split('-') month, day, year = int(month), int(day), int(year) if month < 1 or month > 12: return False if month in [1,3,5,7,8,10,12] and day < 1 or day > 31: return False if month in [4,6,9,11] and day < 1 or day > 30: return False if month == 2 and day < 1 or day > 29: return False except: return False return True

def split_words(txt): ''' Given a string of words, return a list of words split on whitespace, if no whitespaces exists in the text you should split on commas ',' if no commas exists you should return the number of lower-case letters with odd order in the alphabet, ord('a') = 0, ord('b') = 1, ... ord('z') = 25 Examples split_words("Hello world!") ➞ ["Hello", "world!"] split_words("Hello,world!") ➞ ["Hello", "world!"] split_words("abcdef") == 3 ''' if " " in txt: return txt.split() elif "," in txt: return txt.replace(',',' ').split() else: return len([i for i in txt if i.islower() and ord(i)%2 == 0])

def is_sorted(lst): ''' Given a list of numbers, return whether or not they are sorted in ascending order. If list has more than 1 duplicate of the same number, return False. Assume no negative numbers and only integers. Examples is_sorted([5]) ➞ True is_sorted([1, 2, 3, 4, 5]) ➞ True is_sorted([1, 3, 2, 4, 5]) ➞ False is_sorted([1, 2, 3, 4, 5, 6]) ➞ True is_sorted([1, 2, 3, 4, 5, 6, 7]) ➞ True is_sorted([1, 3, 2, 4, 5, 6, 7]) ➞ False is_sorted([1, 2, 2, 3, 3, 4]) ➞ True is_sorted([1, 2, 2, 2, 3, 4]) ➞ False ''' count_digit = dict([(i, 0) for i in lst]) for i in lst: count_digit[i]+=1 if any(count_digit[i] > 2 for i in lst): return False if all(lst[i-1] <= lst[i] for i in range(1, len(lst))): return True else: return False

def intersection(interval1, interval2): """You are given two intervals, where each interval is a pair of integers. For example, interval = (start, end) = (1, 2). The given intervals are closed which means that the interval (start, end) includes both start and end. For each given interval, it is assumed that its start is less or equal its end. Your task is to determine whether the length of intersection of these two intervals is a prime number. Example, the intersection of the intervals (1, 3), (2, 4) is (2, 3) which its length is 1, which not a prime number. If the length of the intersection is a prime number, return "YES", otherwise, return "NO". If the two intervals don't intersect, return "NO". [input/output] samples: intersection((1, 2), (2, 3)) ==> "NO" intersection((-1, 1), (0, 4)) ==> "NO" intersection((-3, -1), (-5, 5)) ==> "YES" """ def is_prime(num): if num == 1 or num == 0: return False if num == 2: return True for i in range(2, num): if num%i == 0: return False return True l = max(interval1[0], interval2[0]) r = min(interval1[1], interval2[1]) length = r - l if length > 0 and is_prime(length): return "YES" return "NO"

def prod_signs(arr): """ You are given an array arr of integers and you need to return sum of magnitudes of integers multiplied by product of all signs of each number in the array, represented by 1, -1 or 0. Note: return None for empty arr. Example: >>> prod_signs([1, 2, 2, -4]) == -9 >>> prod_signs([0, 1]) == 0 >>> prod_signs([]) == None """ if not arr: return None prod = 0 if 0 in arr else (-1) ** len(list(filter(lambda x: x < 0, arr))) return prod * sum([abs(i) for i in arr])

def minPath(grid, k): """ Given a grid with N rows and N columns (N >= 2) and a positive integer k, each cell of the grid contains a value. Every integer in the range [1, N * N] inclusive appears exactly once on the cells of the grid. You have to find the minimum path of length k in the grid. You can start from any cell, and in each step you can move to any of the neighbor cells, in other words, you can go to cells which share an edge with you current cell. Please note that a path of length k means visiting exactly k cells (not necessarily distinct). You CANNOT go off the grid. A path A (of length k) is considered less than a path B (of length k) if after making the ordered lists of the values on the cells that A and B go through (let's call them lst_A and lst_B), lst_A is lexicographically less than lst_B, in other words, there exist an integer index i (1 <= i <= k) such that lst_A[i] < lst_B[i] and for any j (1 <= j < i) we have lst_A[j] = lst_B[j]. It is guaranteed that the answer is unique. Return an ordered list of the values on the cells that the minimum path go through. Examples: Input: grid = [ [1,2,3], [4,5,6], [7,8,9]], k = 3 Output: [1, 2, 1] Input: grid = [ [5,9,3], [4,1,6], [7,8,2]], k = 1 Output: [1] """ n = len(grid) val = n * n + 1 for i in range(n): for j in range(n): if grid[i][j] == 1: temp = [] if i != 0: temp.append(grid[i - 1][j]) if j != 0: temp.append(grid[i][j - 1]) if i != n - 1: temp.append(grid[i + 1][j]) if j != n - 1: temp.append(grid[i][j + 1]) val = min(temp) ans = [] for i in range(k): if i % 2 == 0: ans.append(1) else: ans.append(val) return ans

def tri(n): """Everyone knows Fibonacci sequence, it was studied deeply by mathematicians in the last couple centuries. However, what people don't know is Tribonacci sequence. Tribonacci sequence is defined by the recurrence: tri(1) = 3 tri(n) = 1 + n / 2, if n is even. tri(n) = tri(n - 1) + tri(n - 2) + tri(n + 1), if n is odd. For example: tri(2) = 1 + (2 / 2) = 2 tri(4) = 3 tri(3) = tri(2) + tri(1) + tri(4) = 2 + 3 + 3 = 8 You are given a non-negative integer number n, you have to a return a list of the first n + 1 numbers of the Tribonacci sequence. Examples: tri(3) = [1, 3, 2, 8] """ if n == 0: return [1] my_tri = [1, 3] for i in range(2, n + 1): if i % 2 == 0: my_tri.append(i / 2 + 1) else: my_tri.append(my_tri[i - 1] + my_tri[i - 2] + (i + 3) / 2) return my_tri

def digits(n): """Given a positive integer n, return the product of the odd digits. Return 0 if all digits are even. For example: digits(1) == 1 digits(4) == 0 digits(235) == 15 """ product = 1 odd_count = 0 for digit in str(n): int_digit = int(digit) if int_digit%2 == 1: product= product*int_digit odd_count+=1 if odd_count ==0: return 0 else: return product

def is_nested(string): ''' Create a function that takes a string as input which contains only square brackets. The function should return True if and only if there is a valid subsequence of brackets where at least one bracket in the subsequence is nested. is_nested('[[]]') ➞ True is_nested('[]]]]]]][[[[[]') ➞ False is_nested('[][]') ➞ False is_nested('[]') ➞ False is_nested('[[][]]') ➞ True is_nested('[[]][[') ➞ True ''' opening_bracket_index = [] closing_bracket_index = [] for i in range(len(string)): if string[i] == '[': opening_bracket_index.append(i) else: closing_bracket_index.append(i) closing_bracket_index.reverse() cnt = 0 i = 0 l = len(closing_bracket_index) for idx in opening_bracket_index: if i < l and idx < closing_bracket_index[i]: cnt += 1 i += 1 return cnt >= 2

def sum_squares(lst): """You are given a list of numbers. You need to return the sum of squared numbers in the given list, round each element in the list to the upper int(Ceiling) first. Examples: For lst = [1,2,3] the output should be 14 For lst = [1,4,9] the output should be 98 For lst = [1,3,5,7] the output should be 84 For lst = [1.4,4.2,0] the output should be 29 For lst = [-2.4,1,1] the output should be 6 """ import math squared = 0 for i in lst: squared += math.ceil(i)**2 return squared

def check_if_last_char_is_a_letter(txt): ''' Create a function that returns True if the last character of a given string is an alphabetical character and is not a part of a word, and False otherwise. Note: "word" is a group of characters separated by space. Examples: check_if_last_char_is_a_letter("apple pie") ➞ False check_if_last_char_is_a_letter("apple pi e") ➞ True check_if_last_char_is_a_letter("apple pi e ") ➞ False check_if_last_char_is_a_letter("") ➞ False ''' check = txt.split(' ')[-1] return True if len(check) == 1 and (97 <= ord(check.lower()) <= 122) else False

def can_arrange(arr): """Create a function which returns the largest index of an element which is not greater than or equal to the element immediately preceding it. If no such element exists then return -1. The given array will not contain duplicate values. Examples: can_arrange([1,2,4,3,5]) = 3 can_arrange([1,2,3]) = -1 """ ind=-1 i=1 while i<len(arr): if arr[i]<arr[i-1]: ind=i i+=1 return ind

def largest_smallest_integers(lst): ''' Create a function that returns a tuple (a, b), where 'a' is the largest of negative integers, and 'b' is the smallest of positive integers in a list. If there is no negative or positive integers, return them as None. Examples: largest_smallest_integers([2, 4, 1, 3, 5, 7]) == (None, 1) largest_smallest_integers([]) == (None, None) largest_smallest_integers([0]) == (None, None) ''' smallest = list(filter(lambda x: x < 0, lst)) largest = list(filter(lambda x: x > 0, lst)) return (max(smallest) if smallest else None, min(largest) if largest else None)

def compare_one(a, b): """ Create a function that takes integers, floats, or strings representing real numbers, and returns the larger variable in its given variable type. Return None if the values are equal. Note: If a real number is represented as a string, the floating point might be . or , compare_one(1, 2.5) ➞ 2.5 compare_one(1, "2,3") ➞ "2,3" compare_one("5,1", "6") ➞ "6" compare_one("1", 1) ➞ None """ temp_a, temp_b = a, b if isinstance(temp_a, str): temp_a = temp_a.replace(',','.') if isinstance(temp_b, str): temp_b = temp_b.replace(',','.') if float(temp_a) == float(temp_b): return None return a if float(temp_a) > float(temp_b) else b

def is_equal_to_sum_even(n): """Evaluate whether the given number n can be written as the sum of exactly 4 positive even numbers Example is_equal_to_sum_even(4) == False is_equal_to_sum_even(6) == False is_equal_to_sum_even(8) == True """ return n%2 == 0 and n >= 8

def special_factorial(n): """The Brazilian factorial is defined as: brazilian_factorial(n) = n! * (n-1)! * (n-2)! * ... * 1! where n > 0 For example: >>> special_factorial(4) 288 The function will receive an integer as input and should return the special factorial of this integer. """ fact_i = 1 special_fact = 1 for i in range(1, n+1): fact_i *= i special_fact *= fact_i return special_fact

def fix_spaces(text): """ Given a string text, replace all spaces in it with underscores, and if a string has more than 2 consecutive spaces, then replace all consecutive spaces with - fix_spaces("Example") == "Example" fix_spaces("Example 1") == "Example_1" fix_spaces(" Example 2") == "_Example_2" fix_spaces(" Example 3") == "_Example-3" """ new_text = "" i = 0 start, end = 0, 0 while i < len(text): if text[i] == " ": end += 1 else: if end - start > 2: new_text += "-"+text[i] elif end - start > 0: new_text += "_"*(end - start)+text[i] else: new_text += text[i] start, end = i+1, i+1 i+=1 if end - start > 2: new_text += "-" elif end - start > 0: new_text += "_" return new_text

def file_name_check(file_name): """Create a function which takes a string representing a file's name, and returns 'Yes' if the the file's name is valid, and returns 'No' otherwise. A file's name is considered to be valid if and only if all the following conditions are met: - There should not be more than three digits ('0'-'9') in the file's name. - The file's name contains exactly one dot '.' - The substring before the dot should not be empty, and it starts with a letter from the latin alphapet ('a'-'z' and 'A'-'Z'). - The substring after the dot should be one of these: ['txt', 'exe', 'dll'] Examples: file_name_check("example.txt") # => 'Yes' file_name_check("1example.dll") # => 'No' (the name should start with a latin alphapet letter) """ suf = ['txt', 'exe', 'dll'] lst = file_name.split(sep='.') if len(lst) != 2: return 'No' if not lst[1] in suf: return 'No' if len(lst[0]) == 0: return 'No' if not lst[0][0].isalpha(): return 'No' t = len([x for x in lst[0] if x.isdigit()]) if t > 3: return 'No' return 'Yes'

def sum_squares(lst): """" This function will take a list of integers. For all entries in the list, the function shall square the integer entry if its index is a multiple of 3 and will cube the integer entry if its index is a multiple of 4 and not a multiple of 3. The function will not change the entries in the list whose indexes are not a multiple of 3 or 4. The function shall then return the sum of all entries. Examples: For lst = [1,2,3] the output should be 6 For lst = [] the output should be 0 For lst = [-1,-5,2,-1,-5] the output should be -126 """ result =[] for i in range(len(lst)): if i %3 == 0: result.append(lst[i]**2) elif i % 4 == 0 and i%3 != 0: result.append(lst[i]**3) else: result.append(lst[i]) return sum(result)

def words_in_sentence(sentence): """ You are given a string representing a sentence, the sentence contains some words separated by a space, and you have to return a string that contains the words from the original sentence, whose lengths are prime numbers, the order of the words in the new string should be the same as the original one. Example 1: Input: sentence = "This is a test" Output: "is" Example 2: Input: sentence = "lets go for swimming" Output: "go for" Constraints: * 1 <= len(sentence) <= 100 * sentence contains only letters """ new_lst = [] for word in sentence.split(): flg = 0 if len(word) == 1: flg = 1 for i in range(2, len(word)): if len(word)%i == 0: flg = 1 if flg == 0 or len(word) == 2: new_lst.append(word) return " ".join(new_lst)

def simplify(x, n): """Your task is to implement a function that will simplify the expression x * n. The function returns True if x * n evaluates to a whole number and False otherwise. Both x and n, are string representation of a fraction, and have the following format, <numerator>/<denominator> where both numerator and denominator are positive whole numbers. You can assume that x, and n are valid fractions, and do not have zero as denominator. simplify("1/5", "5/1") = True simplify("1/6", "2/1") = False simplify("7/10", "10/2") = False """ a, b = x.split("/") c, d = n.split("/") numerator = int(a) * int(c) denom = int(b) * int(d) if (numerator/denom == int(numerator/denom)): return True return False

def order_by_points(nums): """ Write a function which sorts the given list of integers in ascending order according to the sum of their digits. Note: if there are several items with similar sum of their digits, order them based on their index in original list. For example: >>> order_by_points([1, 11, -1, -11, -12]) == [-1, -11, 1, -12, 11] >>> order_by_points([]) == [] """ def digits_sum(n): neg = 1 if n < 0: n, neg = -1 * n, -1 n = [int(i) for i in str(n)] n[0] = n[0] * neg return sum(n) return sorted(nums, key=digits_sum)

def specialFilter(nums): """Write a function that takes an array of numbers as input and returns the number of elements in the array that are greater than 10 and both first and last digits of a number are odd (1, 3, 5, 7, 9). For example: specialFilter([15, -73, 14, -15]) => 1 specialFilter([33, -2, -3, 45, 21, 109]) => 2 """ count = 0 for num in nums: if num > 10: odd_digits = (1, 3, 5, 7, 9) number_as_string = str(num) if int(number_as_string[0]) in odd_digits and int(number_as_string[-1]) in odd_digits: count += 1 return count

def get_max_triples(n): """ You are given a positive integer n. You have to create an integer array a of length n. For each i (1 ≤ i ≤ n), the value of a[i] = i * i - i + 1. Return the number of triples (a[i], a[j], a[k]) of a where i < j < k, and a[i] + a[j] + a[k] is a multiple of 3. Example : Input: n = 5 Output: 1 Explanation: a = [1, 3, 7, 13, 21] The only valid triple is (1, 7, 13). """ A = [i*i - i + 1 for i in range(1,n+1)] ans = [] for i in range(n): for j in range(i+1,n): for k in range(j+1,n): if (A[i]+A[j]+A[k])%3 == 0: ans += [(A[i],A[j],A[k])] return len(ans)

def bf(planet1, planet2): ''' There are eight planets in our solar system: the closerst to the Sun is Mercury, the next one is Venus, then Earth, Mars, Jupiter, Saturn, Uranus, Neptune. Write a function that takes two planet names as strings planet1 and planet2. The function should return a tuple containing all planets whose orbits are located between the orbit of planet1 and the orbit of planet2, sorted by the proximity to the sun. The function should return an empty tuple if planet1 or planet2 are not correct planet names. Examples bf("Jupiter", "Neptune") ==> ("Saturn", "Uranus") bf("Earth", "Mercury") ==> ("Venus") bf("Mercury", "Uranus") ==> ("Venus", "Earth", "Mars", "Jupiter", "Saturn") ''' planet_names = ("Mercury", "Venus", "Earth", "Mars", "Jupiter", "Saturn", "Uranus", "Neptune") if planet1 not in planet_names or planet2 not in planet_names or planet1 == planet2: return () planet1_index = planet_names.index(planet1) planet2_index = planet_names.index(planet2) if planet1_index < planet2_index: return (planet_names[planet1_index + 1: planet2_index]) else: return (planet_names[planet2_index + 1 : planet1_index])

def sorted_list_sum(lst): """Write a function that accepts a list of strings as a parameter, deletes the strings that have odd lengths from it, and returns the resulted list with a sorted order, The list is always a list of strings and never an array of numbers, and it may contain duplicates. The order of the list should be ascending by length of each word, and you should return the list sorted by that rule. If two words have the same length, sort the list alphabetically. The function should return a list of strings in sorted order. You may assume that all words will have the same length. For example: assert list_sort(["aa", "a", "aaa"]) => ["aa"] assert list_sort(["ab", "a", "aaa", "cd"]) => ["ab", "cd"] """ lst.sort() new_lst = [] for i in lst: if len(i)%2 == 0: new_lst.append(i) return sorted(new_lst, key=len)

def x_or_y(n, x, y): """A simple program which should return the value of x if n is a prime number and should return the value of y otherwise. Examples: for x_or_y(7, 34, 12) == 34 for x_or_y(15, 8, 5) == 5 """ if n == 1: return y for i in range(2, n): if n % i == 0: return y break else: return x

def double_the_difference(lst): ''' Given a list of numbers, return the sum of squares of the numbers in the list that are odd. Ignore numbers that are negative or not integers. double_the_difference([1, 3, 2, 0]) == 1 + 9 + 0 + 0 = 10 double_the_difference([-1, -2, 0]) == 0 double_the_difference([9, -2]) == 81 double_the_difference([0]) == 0 If the input list is empty, return 0. ''' return sum([i**2 for i in lst if i > 0 and i%2!=0 and "." not in str(i)])

def compare(game,guess): """I think we all remember that feeling when the result of some long-awaited event is finally known. The feelings and thoughts you have at that moment are definitely worth noting down and comparing. Your task is to determine if a person correctly guessed the results of a number of matches. You are given two arrays of scores and guesses of equal length, where each index shows a match. Return an array of the same length denoting how far off each guess was. If they have guessed correctly, the value is 0, and if not, the value is the absolute difference between the guess and the score. example: compare([1,2,3,4,5,1],[1,2,3,4,2,-2]) -> [0,0,0,0,3,3] compare([0,5,0,0,0,4],[4,1,1,0,0,-2]) -> [4,4,1,0,0,6] """ return [abs(x-y) for x,y in zip(game,guess)]

def Strongest_Extension(class_name, extensions): """You will be given the name of a class (a string) and a list of extensions. The extensions are to be used to load additional classes to the class. The strength of the extension is as follows: Let CAP be the number of the uppercase letters in the extension's name, and let SM be the number of lowercase letters in the extension's name, the strength is given by the fraction CAP - SM. You should find the strongest extension and return a string in this format: ClassName.StrongestExtensionName. If there are two or more extensions with the same strength, you should choose the one that comes first in the list. For example, if you are given "Slices" as the class and a list of the extensions: ['SErviNGSliCes', 'Cheese', 'StuFfed'] then you should return 'Slices.SErviNGSliCes' since 'SErviNGSliCes' is the strongest extension (its strength is -1). Example: for Strongest_Extension('my_class', ['AA', 'Be', 'CC']) == 'my_class.AA' """ strong = extensions[0] my_val = len([x for x in extensions[0] if x.isalpha() and x.isupper()]) - len([x for x in extensions[0] if x.isalpha() and x.islower()]) for s in extensions: val = len([x for x in s if x.isalpha() and x.isupper()]) - len([x for x in s if x.isalpha() and x.islower()]) if val > my_val: strong = s my_val = val ans = class_name + "." + strong return ans

def cycpattern_check(a , b): """You are given 2 words. You need to return True if the second word or any of its rotations is a substring in the first word cycpattern_check("abcd","abd") => False cycpattern_check("hello","ell") => True cycpattern_check("whassup","psus") => False cycpattern_check("abab","baa") => True cycpattern_check("efef","eeff") => False cycpattern_check("himenss","simen") => True """ l = len(b) pat = b + b for i in range(len(a) - l + 1): for j in range(l + 1): if a[i:i+l] == pat[j:j+l]: return True return False

def even_odd_count(num): """Given an integer. return a tuple that has the number of even and odd digits respectively. Example: even_odd_count(-12) ==> (1, 1) even_odd_count(123) ==> (1, 2) """ even_count = 0 odd_count = 0 for i in str(abs(num)): if int(i)%2==0: even_count +=1 else: odd_count +=1 return (even_count, odd_count)

def int_to_mini_roman(number): """ Given a positive integer, obtain its roman numeral equivalent as a string, and return it in lowercase. Restrictions: 1 <= num <= 1000 Examples: >>> int_to_mini_roman(19) == 'xix' >>> int_to_mini_roman(152) == 'clii' >>> int_to_mini_roman(426) == 'cdxxvi' """ num = [1, 4, 5, 9, 10, 40, 50, 90, 100, 400, 500, 900, 1000] sym = ["I", "IV", "V", "IX", "X", "XL", "L", "XC", "C", "CD", "D", "CM", "M"] i = 12 res = '' while number: div = number // num[i] number %= num[i] while div: res += sym[i] div -= 1 i -= 1 return res.lower()

def right_angle_triangle(a, b, c): ''' Given the lengths of the three sides of a triangle. Return True if the three sides form a right-angled triangle, False otherwise. A right-angled triangle is a triangle in which one angle is right angle or 90 degree. Example: right_angle_triangle(3, 4, 5) == True right_angle_triangle(1, 2, 3) == False ''' return a*a == b*b + c*c or b*b == a*a + c*c or c*c == a*a + b*b

def find_max(words): """Write a function that accepts a list of strings. The list contains different words. Return the word with maximum number of unique characters. If multiple strings have maximum number of unique characters, return the one which comes first in lexicographical order. find_max(["name", "of", "string"]) == "string" find_max(["name", "enam", "game"]) == "enam" find_max(["aaaaaaa", "bb" ,"cc"]) == ""aaaaaaa" """ return sorted(words, key = lambda x: (-len(set(x)), x))[0]

def eat(number, need, remaining): """ You're a hungry rabbit, and you already have eaten a certain number of carrots, but now you need to eat more carrots to complete the day's meals. you should return an array of [ total number of eaten carrots after your meals, the number of carrots left after your meals ] if there are not enough remaining carrots, you will eat all remaining carrots, but will still be hungry. Example: * eat(5, 6, 10) -> [11, 4] * eat(4, 8, 9) -> [12, 1] * eat(1, 10, 10) -> [11, 0] * eat(2, 11, 5) -> [7, 0] Variables: @number : integer the number of carrots that you have eaten. @need : integer the number of carrots that you need to eat. @remaining : integer the number of remaining carrots thet exist in stock Constrain: * 0 <= number <= 1000 * 0 <= need <= 1000 * 0 <= remaining <= 1000 Have fun :) """ if(need <= remaining): return [ number + need , remaining-need ] else: return [ number + remaining , 0]

def do_algebra(operator, operand): """ Given two lists operator, and operand. The first list has basic algebra operations, and the second list is a list of integers. Use the two given lists to build the algebric expression and return the evaluation of this expression. The basic algebra operations: Addition ( + ) Subtraction ( - ) Multiplication ( * ) Floor division ( // ) Exponentiation ( ** ) Example: operator['+', '*', '-'] array = [2, 3, 4, 5] result = 2 + 3 * 4 - 5 => result = 9 Note: The length of operator list is equal to the length of operand list minus one. Operand is a list of of non-negative integers. Operator list has at least one operator, and operand list has at least two operands. """ expression = str(operand[0]) for oprt, oprn in zip(operator, operand[1:]): expression+= oprt + str(oprn) return eval(expression)

def solve(s): """You are given a string s. if s[i] is a letter, reverse its case from lower to upper or vise versa, otherwise keep it as it is. If the string contains no letters, reverse the string. The function should return the resulted string. Examples solve("1234") = "4321" solve("ab") = "AB" solve("#a@C") = "#A@c" """ flg = 0 idx = 0 new_str = list(s) for i in s: if i.isalpha(): new_str[idx] = i.swapcase() flg = 1 idx += 1 s = "" for i in new_str: s += i if flg == 0: return s[len(s)::-1] return s

def string_to_md5(text): """ Given a string 'text', return its md5 hash equivalent string. If 'text' is an empty string, return None. >>> string_to_md5('Hello world') == '3e25960a79dbc69b674cd4ec67a72c62' """ import hashlib return hashlib.md5(text.encode('ascii')).hexdigest() if text else None

def generate_integers(a, b): """ Given two positive integers a and b, return the even digits between a and b, in ascending order. For example: generate_integers(2, 8) => [2, 4, 6, 8] generate_integers(8, 2) => [2, 4, 6, 8] generate_integers(10, 14) => [] """ lower = max(2, min(a, b)) upper = min(8, max(a, b)) return [i for i in range(lower, upper+1) if i % 2 == 0]