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配列をランダムにシャッフルする関数

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shuffleList | CreateJS

配列をランダムにシャッフルする関数

////////////////////////////////////////
// 連番配列生成
////////////////////////////////////////
function createList(first, length) {
    var n;
    var list = [];
    for (n = first; n < first+length; n++) {
        list.push(n);
    }
    return list;
}

////////////////////////////////////////
// ランダム配列処理
////////////////////////////////////////
function shuffleList(list) {
    var n = list.length;
    var _list = list.concat();
    while (n--) {
        var i = Math.floor(Math.random()*(n + 1));
        var t = _list[n];
        _list[n] = _list[i];
        _list[i] = t;
    }
    return _list;
}
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