LeetCode中怎样删除排序数组中的重复项

 1class Solution {
 2public:
 3    int removeDuplicates(vector& nums) {
 4        if (nums.empty()) return 0;
 5        int pre = 0, cur = 0, n = nums.size();
 6        while (cur < n) {
 7            if (nums[pre] == nums[cur]) {
 8                cur++;
 9            }else {
10              pre++;
11              nums[pre] = nums[cur];
12              cur++;
13            }
14        }
15        return pre + 1;
16    }
17};

代码截图