[C++] merge

개요

• 다른 컨테이너의 노드를 연결

예제

• 코드

   #include <iostream>
   #include <map>
   #include <string>
      
   using namespace std;
      
   int main() {
   	map<int, string> m1{{1, "a"}, {2, "b"}, {3, "c"}};
   	map<int, string> m2{{4, "d"}, {5, "e"}, {6, "f"}};
      
   	for (const auto &iter : m1) {
   		cout << iter.first << ", " << iter.second << endl;
   	}
      
   	cout << "------ 1" << endl;
      
   	for (const auto &iter : m2) {
   		cout << iter.first << ", " << iter.second << endl;
   	}
      
   	cout << "------ 2" << endl;
      
   	m1.merge(m2);
      
   	for (const auto &iter : m1) {
   		cout << iter.first << ", " << iter.second << endl;
   	}
      
   	cout << "------ 3" << endl;
      
   	for (const auto &iter : m2) {
   		cout << iter.first << ", " << iter.second << endl;
   	}
      
   	cout << "------ 4" << endl;
      
   	return 0;
   }
  

• 실행 결과

   1, a
   2, b
   3, c
   ------ 1
   4, d
   5, e
   6, f
   ------ 2
   1, a
   2, b
   3, c
   4, d
   5, e
   6, f
   ------ 3
   ------ 4