[Programmers] Lv 2. 행렬의 곱셈

https://school.programmers.co.kr/learn/courses/30/lessons/12949

프로그래머스

 

#include <string>
#include <vector>

using namespace std;

vector<vector<int>> solution(vector<vector<int>> arr1, vector<vector<int>> arr2) 
{
	vector<vector<int>> answer;

	for (int i = 0; i < arr1.size(); i++) //arr1
	{
		vector<int> tmp;
		for (int j = 0; j < arr2[0].size(); j++) //arr2
		{
			int value = 0;
			for (int k = 0; k < arr1[0].size(); k++)
				value += arr1[i][k] * arr2[k][j];	
			tmp.push_back(value);
		}
		answer.push_back(tmp);
	}
	
	return answer;
}

GitHub : https://github.com/developeSHG/Algorithm-Baekjoon_Programmers/blob/b1afd96b17fd01b4342cf29afa8f19b49c20f877/%ED%94%84%EB%A1%9C%EA%B7%B8%EB%9E%98%EB%A8%B8%EC%8A%A4/lv2/12949.%E2%80%85%ED%96%89%EB%A0%AC%EC%9D%98%E2%80%85%EA%B3%B1%EC%85%88/%ED%96%89%EB%A0%AC%EC%9D%98%E2%80%85%EA%B3%B1%EC%85%88.cpp

GitHub - developeSHG/Algorithm-Baekjoon_Programmers: 백준 and 프로그래머스 소스코드