冒泡排序

<script>    var arr = [3,1,2,4,6,5];    for(var i=0;i<arr.length;i++){        for(var j=0;j<arr.length-i;j++){            if(arr[j] > arr[j+1]){                var a = arr[j+1];                arr[j+1] = arr[j];                arr[j] = a;            }        }    }    console.log(arr);</script>