冒泡排序与选择排序

var arr = [1,3,5,67,88,34,21,14];
        //冒泡
        for(var i = 0;i<arr.length-1;i++){
            for(var j = 0;j<arr.length-1;j++){
                if(arr[j]>arr[j+1]){
                    var tem = arr[j];
                    arr[j] = arr[j+1];
                    arr[j+1] = tem;
                }
            }
        }
        alert(arr)
        //选择
        for(var i = 0;i<arr.length-1;i++){
            for(var j = i+1; j<arr.length;j++){
                if(arr[i]>arr[j]){
                    var tem = arr[i];
                    arr[i] = arr[j];
                    arr[j] = tem;
                }
            }
        }
        alert(arr);