Array.prototype.square

easycodingJavaScriptArraysPrototypes~10 min

Asked at Google, Meta, Amazon

Overview

Implement square(array) — returns a new array where each element is squared.

Examples

square([1,2,3]); // [1,4,9]
square([-2,0,3]); // [4,0,9]

Solution

Reveal solution

function square(array) {
  return array.map(x => x * x);
}

array-prototype-square.js

Array.prototype.square

easycodingJavaScriptArrays

Overview

Implement square(array) — returns a new array where each element is squared.

Examples

square([1,2,3]); // [1,4,9]
square([-2,0,3]); // [4,0,9]

Solution

Reveal solution

function square(array) {
  return array.map(x => x * x);
}

NameTopicDifficulty

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