백준 2738 - 행렬 덧셈 (자바 JAVA 풀이)

https://www.acmicpc.net/problem/2738

2738번: 행렬 덧셈

 

 

 

2차원 배열을 2개 선언해주고(arr1, arr2), 각각 받아준 뒤 새로운 2차원 배열(ans)에 더해서 넣어주면 됩니다. 

자세한 풀이는 아래 코드를 참고해주세요. 

 

import java.io.*;
import java.util.*;
 
public class test {
 
    static int N, M;
    static int [][] arr1, arr2;
 
    public static void main(String args[]) throws Exception {
 
        Scanner sc = new Scanner(System.in);
 
        N = sc.nextInt();
        M = sc.nextInt();
 
        arr1 = new int[N+1][M+1];
        arr2 = new int[N+1][M+1];
 
        for(int i=1; i<=N; i++){
            for(int j=1; j<=M; j++){
                arr1[i][j] = sc.nextInt();
            }
        }
 
        for(int i=1; i<=N; i++){
            for(int j=1; j<=M; j++){
                arr2[i][j] = sc.nextInt();
            }
        }
 
        int [][] ans = new int [N+1][M+1];
 
        for(int i=1; i<=N; i++){
            for(int j=1; j<=M; j++){
                ans[i][j] = arr1[i][j] + arr2[i][j];
            }
        }
 
        for(int i=1; i<=N; i++){
            for(int j=1; j<=M; j++){
                System.out.print(ans[i][j] + " ");
            }System.out.println();
        }
    }
}