Remove Element

https://leetcode.com/problems/remove-element/

class Solution {
public:
    int removeElement(vector<int>& nums, int val) {
        int size=nums.size();
        int j=0;
        for(int i=0;i<size;i++)
        {
            if(nums.at(i)!=val)
            {
                nums[j]=nums[i];
                j++;
            }
        }
        int newSize=j;
        nums.resize(newSize);
        return newSize;
    }
};