백준 2차원 배열

 

2738 - 행렬의 덧셈

 

public static void main(String[] args) throws IOException {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

    String[] rowcol = br.readLine().split(" ");
    int row = Integer.valueOf(rowcol[0]);
    int col = Integer.valueOf(rowcol[1]);

    int[][] arr = new int[row][col];
    //행렬 입력
    for(int i=0 ;i<2;i++){
        for(int j=0 ; j< row; j++){
            rowcol = br.readLine().split(" ");
            for(int k=0; k< col;k++){
               arr[j][k]+=Integer.valueOf(rowcol[k]);
            }
        }
    }
    
    //행렬 출력
    for(int[] a: arr){
        for(int b : a){
            bw.write(b+" ");
        }
        bw.write("\n");
    }
    bw.flush();
    bw.close();

}