programmers_행렬의 곱셈_java

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

프로그래머스

class Solution {
    public int[][] solution(int[][] arr1, int[][] arr2) {
        int arr1Hieght = arr1.length;
        int arr1Width = arr1[0].length;
        int arr2Hieght = arr2.length;
        int arr2Width = arr2[0].length;
        
        int[][] answer = new int[arr1Hieght][arr2Width];
        
        for(int i = 0; i< arr1Hieght; i++){
            for(int j = 0; j < arr2Width; j++){
                answer[i][j] = 0;
                for(int k = 0; k < arr1Width; k++){
                    answer[i][j] += arr1[i][k] * arr2[k][j];
                }
            }
        }
        
        return answer;
    }
}