JavaScript实现生成不重复随机数组的方法

// 获取数组中的随机数
// HF.Math.RandomNumbers是前缀，可以自定义，主要关注逻辑代码
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;
}