30 lines
819 B
JavaScript
30 lines
819 B
JavaScript
/*jshint -W054 */
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(function (exports) {
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'use strict';
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// http://stackoverflow.com/questions/2450954/how-to-randomize-shuffle-a-javascript-array
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function shuffle(array) {
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var currentIndex = array.length
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, temporaryValue
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, randomIndex
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;
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// While there remain elements to shuffle...
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while (0 !== currentIndex) {
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// Pick a remaining element...
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randomIndex = Math.floor(Math.random() * currentIndex);
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currentIndex -= 1;
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// And swap it with the current element.
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temporaryValue = array[currentIndex];
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array[currentIndex] = array[randomIndex];
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array[randomIndex] = temporaryValue;
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}
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return array;
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}
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exports.knuthShuffle = shuffle;
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}('undefined' !== typeof exports && exports || 'undefined' !== typeof window && window || global));
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