转：MK院长随机数算法

 1 var keys = [], nums = [], result = [];
 2     for (var i = 1; i <= 800; i++) {
 3         var key = Math.random();
 4         keys.push(key);
 5         nums[key] = i;
 6     }
 7     keys.sort();
 8     for (var i = 0; i < keys.length; i++) {
 9         result.push(nums[keys[i]])
10     }
11     console.log(result);
12     console.log(result.length);