刪除排序數組中的重複數字

class Solution {
public:
   removeDuplicates(vector<int> &nums) {
        // write your code here
        if(nums.empty())
        {
            return 0;
        }//if
        int n=nums.size(),k=0;
        for(int i=1;i<n;++i)
        {
            if(nums[i] !=nums[k])
            {
                nums[++k]=nums[i];
            }//if
            
            }//for
            nums.resize(k+1);
            return k+1;
    }
};