27_RemoveElement

---

title: 27. Remove Element tags:
- Two Pointers categories: leetcode comments: false

problem

solution

class Solution {
public:
    int removeElement(vector<int>& nums, int val) {
        int slow = 0, fast = 0, n = nums.size();
        while(fast<n){
            if(nums[fast] !=val ) nums[slow++] = nums[fast];
            fast++;
        }
        return slow;
    }
};

analysis

• time complexity O(n)
• space complexity O(1)