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This kata is from check py.checkio.org You are given an array with positive numbers and a non-negative number N. You should find the N-th power of the element in the array with the index N. If N is outside of the array, then return -1. Don't forget that the first element has the index 0. Let's look at a few examples: array = [1, 2, 3, 4] and N = 2, then the result is 3^2 == 9; array = [1, 2, 3] ..

Given a string, capitalize the letters that occupy even indexes and odd indexes separately, and return as shown below. Index 0 will be considered even. For example, capitalize("abcdef") = ['AbCdEf', 'aBcDeF']. See test cases for more examples. The input will be a lowercase string with no spaces. Good luck! Solution: def capitalize(s): return [''.join(v.lower() if i%2==1 else v.upper() for i, v i..

Jamie is a programmer, and James' girlfriend. She likes diamonds, and wants a diamond string from James. Since James doesn't know how to make this happen, he needs your help. Task You need to return a string that looks like a diamond shape when printed on the screen, using asterisk (*) characters. Trailing spaces should be removed, and every line must be terminated with a newline character (\n)...

There is an array with some numbers. All numbers are equal except for one. Try to find it! find_uniq([ 1, 1, 1, 2, 1, 1 ]) == 2 find_uniq([ 0, 0, 0.55, 0, 0 ]) == 0.55 It’s guaranteed that array contains at least 3 numbers. The tests contain some very huge arrays, so think about performance. Solution: def find_uniq(arr): n = arr[0] == arr[-1] and arr[0] or arr[1] return [i for i in arr if n != i..

Mr. Scrooge has a sum of money 'P' that he wants to invest. Before he does, he wants to know how many years 'Y' this sum 'P' has to be kept in the bank in order for it to amount to a desired sum of money 'D'. The sum is kept for 'Y' years in the bank where interest 'I' is paid yearly. After paying taxes 'T' for the year the new sum is re-invested. Note to Tax: not the invested principal is taxed..

The first input array is the key to the correct answers to an exam, like ["a", "a", "b", "d"]. The second one contains a student's submitted answers. The two arrays are not empty and are the same length. Return the score for this array of answers, giving +4 for each correct answer, -1 for each incorrect answer, and +0 for each blank answer, represented as an empty string (in C the space characte..

Welcome. In this kata you are required to, given a string, replace every letter with its position in the alphabet. If anything in the text isn't a letter, ignore it and don't return it. "a" = 1, "b" = 2, etc. Example alphabet_position("The sunset sets at twelve o' clock.") Should return "20 8 5 19 21 14 19 5 20 19 5 20 19 1 20 20 23 5 12 22 5 15 3 12 15 3 11" ( as a string ) Solution: from typin..

Your task is to write function findSum. Upto and including n, this function will return the sum of all multiples of 3 and 5. For example: findSum(5) should return 8 (3 + 5) findSum(10) should return 33 (3 + 5 + 6 + 9 + 10) Solution: def find(n): return sum([i for i in range(1, n+1) if i%3 == 0 or i%5 == 0]) 1. Find a number less than 'n'. 2. Find a number that is divisible by 3 or divisible by 5..

You will be given an array of objects (associative arrays in PHP, table in COBOL) representing data about developers who have signed up to attend the next coding meetup that you are organising. Your task is to return an object (associative array in PHP, table in COBOL) which includes the count of each coding language represented at the meetup. For example, given the following input array: list1 ..

Given an array of numbers, return a new array of length number containing the last even numbers from the original array (in the same order). The original array will be not empty and will contain at least "number" even numbers. For example: ([1, 2, 3, 4, 5, 6, 7, 8, 9], 3) => [4, 6, 8] ([-22, 5, 3, 11, 26, -6, -7, -8, -9, -8, 26], 2) => [-8, 26] ([6, -25, 3, 7, 5, 5, 7, -3, 23], 1) => [6] Solutio..