array 数组改变值的有关问题。求大侠指点

array 数组改变值的问题。求大侠指点。
如题： var array=new Araay(["3","3","6","6","9","11"]); 把array的值从1开始改值排序 为[1,1,2,2,3,4] 序号可以重复但不能间断 ！

[解决办法]

JScript code

function test(){        var array=["3","3","6","6","9","11"];         var arr = [];        var index = 1;        for(var i=0; i<array.length;i++){            if(i==0){                arr[i] = index;            }            else{                if(array[i]==array[i-1]){                    arr[i] = index;                }                else{                    index = index +1;                    arr[i] = index;                }            }        }        alert(arr);    }