Post

Remove Duplicates from Sorted Array II

Posted Updated
By Seonghun Jung 1 min read

1. Problem Statement

2. Algorithm Design and Approach

3. Implementation

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class Solution
{
public:
    int removeDuplicates(vector<int> &nums)
    {
        int cur = nums[0];
        int flag = 0;
        int len = nums.size();
        for (auto it = nums.begin(); it != nums.end(); it++)
        {
            if (*it == cur)
            {
                if (flag > 1)
                {
                    nums.erase(it);
                    it--;
                    len--;
                }
                else
                {
                    flag++;
                }
            }
            else
            {
                cur = *it;
                flag = 1;
            }
        }
        return len;
    }
};

4. Example Walkthrough

5. Conclusion

Algorithm, Array/String
c++ leet code
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