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36 lines
839 B
JavaScript
36 lines
839 B
JavaScript
(function (exports) {
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'use strict';
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/**
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* The shuffling algorithm of
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* Fisher-Yates.<br><br>
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* Time complexity: O(N).
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*
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* @example
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* var shuffle = require('path-to-algorithms/src/' +
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* 'shuffle/fisheryates').shuffle;
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* console.log(shuffle([1, 2, 3, 4, 5])); // shuffled array
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*
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* @public
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* @module shuffle/fisheryates
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* @param {Array} array Array which should be shuffled.
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* @return {Array} Shuffled array.
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*/
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function shuffle(array) {
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var size = array.length;
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var rand;
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var temp;
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for (var i = 0; i < size; i += 1) {
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rand = Math.floor(i + Math.random() * (size - i));
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temp = array[rand];
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array[rand] = array[i];
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array[i] = temp;
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}
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return array;
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}
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exports.shuffle = shuffle;
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})(typeof window === 'undefined' ? module.exports : window);
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