Nth_Power.md

CodeWars Python Solutions

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N-th Power

This kata is from check py.checkio.org

You are given an array with positive numbers and a 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] and N = 3, but N is outside of the array, so the result is -1.

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Given Code

def index(array, n):
    pass

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Solution

def index(array, n):
    return array[n] ** n if n < len(array) else -1

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See on CodeWars.com