public void moveZeroes(int[] nums) {
    int cur = 0;
    int dest = -1;
    while(cur < nums.length) {
        if(nums[cur] != 0) {
            int tmp;
            tmp = nums[++dest];//除最开始时外，就是0的
            nums[dest] = nums[cur];
            nums[cur] = tmp;
        }
        cur++;
    }
}