algorithmヘッダを使ったremoveの使用例

algorithm_remove.cpp

#include <iostream>
#include <vector>

static void print_vector(const std::vector<int>& v)
{
  std::cout << "----- vector start -----" << std::endl;
  for(const auto& i : v)
  {
    std::cout << i << " ";
  }
  std::cout << std::endl;
  std::cout << "----- vector end -----" << std::endl;
}

int main()
{
  std::vector<int> v{1, 2, 3, 4, 5, 6};
  print_vector(v);

  int target = 5;
  v.erase(std::remove(v.begin(), v.end(), target), v.end());

  print_vector(v);
}