冒泡排序

冒泡排序 ：

<script type ="text/javascript">  //冒泡排序   var arr = [23,294,2323,23,699,43,21,54,88,99,26,87,765,654,999];   //倒序   function sortDesc(arr){   for(var i =0;i<arr.length-1;i++){// i = 0; m =9;  0 - 8 => 9次   for(var j =0; j<arr.length-i-1; j++){ // j = 0 n = 8   0 - 8=> 9次   if(arr[j]<arr[j+1])   {  temp = arr[j]  arr[j]=arr[j+1]  arr[j+1]=temp   }   }     }       document.write(arr);   }   //顺序   function sortAsc(arr){   for(var i =0;i<arr.length-1;i++){// i = 0; m =9; 0 - 8    for(var j =0; j<arr.length-i-1; j++){ // j = 0 n = 9  0 - 8=> 89   if(arr[j]>arr[j+1])   {  temp = arr[j]  arr[j]=arr[j+1]  arr[j+1]=temp   }   }     }       document.write(arr);   }   //调用    sortAsc(arr);    document.write("<br>");    sortDesc(arr);</script>