26.删除排序数组中的重复项

  

class Solution {
public:
    int removeDuplicates(vector<int>& nums) {
        set<int> st;
        int k = 0;
        for(int i = 0; i < nums.size(); ++i) {
            if(!st.count(nums[i])) {
                nums[k++] = nums[i];
                st.insert(nums[i]);
            }
        }
        return st.size();
    }
};

Accepted

161/161 cases passed (20 ms)

Your runtime beats 72.01 % of cpp submissions

Your memory usage beats 5.09 % of cpp submissions (11.9 MB)