JS生成随机数进行循环匹配数组

 function RndNum(n) {
            var rnd = "";
            for (var i = 0; i < n; i++)
                rnd += Math.floor(Math.random() * 10);
            return rnd;
        }

        function start(tip) {
            let maxCount = RndNum(3);
            let ary = [];
            let match = 0;
            let eachCount = 0;
            console.group(tip);
            eachAry(ary);
            console.groupEnd();
            function eachAry(ary) {
                if (eachCount == maxCount) {
                    console.log("已经是查找最大值了,我们无法继续寻找了");
                } else {
                    eachCount++;
                    console.log("\r\n 第:" + eachCount + "次执行");
                    let num = RndNum(3);
                    console.log("num:" + num);
                    if (ary.length <= 0) {
                        ary.push(num);
                    } else {
                        ary.forEach(function (item, index) {
                            if (item == num) {
                                match++;
                                console.log(ary);
                                console.log("匹配到一条数据,Index:" + index);
                            }
                        });
                    }

                    console.log("总共匹配到:" + match + "条");
                    if (match == 0) {
                        ary.push(num);
                        eachAry(ary);
                    }
                }

            }
        }

..我试了好多次，发现数组的第一个随机值有很大的几率会和第二个值相同

做这个目地是为了拿到一些瞎**搞来的数据,例如在第几次执行的时候匹配成功了,

还有匹配成功次数,想象一下..如果有三个随机数连续相同...是多么可怕//