Created
August 25, 2016 11:32
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| function shuffle(arr) { | |
| if (!Array.isArray(arr)) { throw "need an array as input"; } | |
| if (arr.length < 2) { return arr; } | |
| var pick = Math.floor(Math.random() * (arr.length)); | |
| var tmp = arr[pick]; arr[pick] = arr[0]; arr[0] = tmp; | |
| return [arr[0]].concat(shuffle(arr.slice(1))); | |
| } | |
| shuffle([1,2,3,4,5]) |
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