C++ STL의 unordered_multimap swap() 함수는 한 멀티맵의 요소를 동일한 크기와 유형의 다른 멀티맵으로 교체하는 데 사용됩니다.
알고리즘
Begin Declaring two empty map container m, m1. Insert some values in both m, m1 map containers. Perform swap() function to swap the values of m, m1 map containers. Printing the swapped values of m map container. Printing the swapped values of m1 map container. End.
예시 코드
#include<iostream> #include <bits/stdc++.h> using namespace std; int main() { unordered_map<char, int> m,m1; // declaring m, m1 as empty map container m.insert (pair<char, int>('b', 10)); //inserting values in map container m.insert (pair<char, int>('c',30)); m.insert (pair<char, int>('d',40)); m1.insert (pair<char, int>('a', 20)); m1.insert (pair<char, int>('e',70)); m1.insert (pair<char, int>('f',60)); m.swap(m1); // swapping the values of two map container. cout << "\n Key and values of 1st set are:"; for (auto it = m.begin(); it != m.end(); it++) { cout << "{" << it->first << ", " << it->second << "} "; // printing the swapped values of m map container } cout << "\n Key and values of 2nd set are:"; // printing the swapped values of m1 map container for (auto it = m1.begin(); it != m1.end(); it++) { cout << "{" << it->first << ", " << it->second << "} "; } return 0; }
출력
Key and values of 1st set are: {f, 60} {a, 20} {e, 70} Key and values of 2nd set are: {d, 40} {b, 10} {c, 30}.