diff --git a/Data-Structures/Array/Reverse.js b/Data-Structures/Array/Reverse.js new file mode 100644 index 0000000000..79a789c017 --- /dev/null +++ b/Data-Structures/Array/Reverse.js @@ -0,0 +1,17 @@ +/** https://www.geeksforgeeks.org/write-a-program-to-Reverse-an-array-or-string/ + * This function will accept an array and + * Reverse its elements and returns the inverted array + * @param {Array} arr array with elements of any data type + * @returns {Array} array with inverted elements + */ + +const Reverse = (arr) => { + // limit specifies the amount of Reverse actions + for (let i = 0, j = arr.length - 1; i < arr.length / 2; i++, j--) { + const temp = arr[i] + arr[i] = arr[j] + arr[j] = temp + } + return arr +} +export { Reverse } diff --git a/Data-Structures/Array/test/Reverse.test.js b/Data-Structures/Array/test/Reverse.test.js new file mode 100644 index 0000000000..bf137fe655 --- /dev/null +++ b/Data-Structures/Array/test/Reverse.test.js @@ -0,0 +1,13 @@ +import { Reverse } from '../Reverse.js' +import each from 'jest-each' + +describe('reverse elements in an array', () => { + each` + array | expected + ${[]} | ${[]} + ${[1]} | ${[1]} + ${[1, 2, 3, 4]} | ${[4, 3, 2, 1]} + `.test('returns $expected when given $array', ({ array, expected }) => { + expect(Reverse(array)).toEqual(expected) + }) +}) pFad - Phonifier reborn

Pfad - The Proxy pFad of © 2024 Garber Painting. All rights reserved.

Note: This service is not intended for secure transactions such as banking, social media, email, or purchasing. Use at your own risk. We assume no liability whatsoever for broken pages.


Alternative Proxies:

Alternative Proxy

pFad Proxy

pFad v3 Proxy

pFad v4 Proxy