lc283

一开始想用冒泡但是超时了，用了双指针：

class Solution {
    public void moveZeroes(int[] nums) {
        int i = 0,j = 0,n = nums.length;
        while(j<n){
            while(i<n&&nums[i]!=0){
                i++;
            }
            j = i;
            while(j<n&&nums[j]==0){
                j++;
            }
            if(j>=n) break;
            swap(nums,i,j);
        }


    }
    private void swap(int[] nums,int i,int j){
        int t = nums[i];
        nums[i] = nums[j];
        nums[j] = t;
    }
}