[JAVA/프로그래머스] 연습문제: 행렬의 곱셈

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import java.util.*;
/**
 *
 * @author HEESOO
 *
 */
class Solution {
    public int[][] solution(int[][] arr1, int[][] arr2) {
        int[][] answer = new int[arr1.length][arr2[0].length];
        for(int i=0;i<answer.length;i++){
            for(int j=0;j<answer[0].length;j++){
                for(int k=0;k<arr1[0].length;k++){
                    answer[i][j]+=arr1[i][k]*arr2[k][j];
                }
            }
        }
        return answer;
    }
}