Leetcode#27 Remove Element

class Solution {
    public:
        int removeElement(vector<int>& nums, int val) {
            if(nums.size()==0)
                return 0;

            int count = 0;
            for(int i=0; i<nums.size(); i++) {
                if(nums[i] != val) {
                    nums[count++] = nums[i];
                }
            }
            return count;
        }
};