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Index Power with ternary operator solution in Clear category for [old] Index Power by SebasGrammar
"use strict";
function indexPower(arr, pow) {
return arr.includes(arr[pow]) ? arr[pow] ** pow : -1
}
var assert = require('assert');
if (!global.is_checking) {
console.log('Example:')
console.log(indexPower([1, 2, 3, 4], 2))
assert.equal(indexPower([1, 2, 3, 4], 2), 9, "Square");
assert.equal(indexPower([1, 3, 10, 100], 3), 1000000, "Cube");
assert.equal(indexPower([0, 1], 0), 1, "Zero power");
assert.equal(indexPower([1, 2], 3), -1, "IndexError");
console.log("Coding complete? Click 'Check' to review your tests and earn cool rewards!");
}
April 8, 2019