JS生成不重复的随机数组

//获取数组中的随机数

//HF.Math.RandomNumbers是前缀，可以自己定义，主要看逻辑代码

HF.Math.RandomNumbers = function (startNum, endNum, count, repeat) {
    var ret = [];
    if (repeat) {
        for (var i = 0; i < count; i++) {
            ret[i] = HF.Math.Random(startNum, endNum);
        }
        return ret;
    }
    var tmp = [];
    var i = 0;
    for (var s = startNum; s <= endNum; s++) {
        tmp[i++] = s;
    }
    var l = tmp.length;
    for (i = 0; i < count; i++) {
        ret[i] = HF.Array.Remove(tmp, HF.Math.Random(0, --l));
    }
    return ret;
}