删除排序数组中的重复数字

class Solution {
public:
    /**
     * @param A: a list of integers
     * @return : return an integer
     */
    int removeDuplicates(vector<int> &nums) {
        // write your code here
      int longs=nums.size();
    int number=0;
    if(longs==0)
    return 0;
    else
    {
        int k=0;
        for(int i=0;i<longs-number;i++)
        {
            if(nums[i]==nums[i+1])
            {
            k=0;
            while(nums[i]==nums[i+k]) k++;
            number=number+k-1;
            for(int j=i+1;j<longs-number;j++)
            nums[j]=nums[j+k-1];
            nums[longs-number]=0;
            }
        }
        longs-=number;
        nums.resize(longs+1);
        return longs;
    }
    }
};