JS生成不重复随机数组的函数代码

//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;
}