#include "s0027_remove_element.hpp"

int Solution::removeElement(vector<int>& nums, int val) {
  int size = nums.size();
  if (size == 0) {
    return 0;
  }
  int fast{0}, slow{0};
  for (; fast < size; ++fast) {
    if (nums.at(fast) == val) {
      continue;
    } else {
      nums[slow] = nums.at(fast);
      ++slow;
    }
  }
  return slow;
}