Row and Column Sums

Lab Java Beginner 10 points

Read r and c, then an r×c matrix. Print each row's sum on one line, then each column's sum on the next.

Input

r c, then r rows.

Output

Two lines.

Example

Input

2 3
1 2 3
4 5 6

Output

6 15
5 7 9

Sample input available Sample output available

Editor

Java

Hints

m[i][j] is row i, column j.

For column sums, the outer loop goes over columns.

Solution explanation

A 2D array is an array of rows; swapping loop order switches between row-wise and column-wise work.

Show solution

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int r = sc.nextInt(), c = sc.nextInt();
        int[][] m = new int[r][c];
        for (int i = 0; i < r; i++) {
            for (int j = 0; j < c; j++) {
                m[i][j] = sc.nextInt();
            }
        }
        StringBuilder rows = new StringBuilder();
        for (int i = 0; i < r; i++) {
            int sum = 0;
            for (int j = 0; j < c; j++) {
                sum += m[i][j];
            }
            rows.append(sum).append(i < r - 1 ? " " : "");
        }
        StringBuilder cols = new StringBuilder();
        for (int j = 0; j < c; j++) {
            int sum = 0;
            for (int i = 0; i < r; i++) {
                sum += m[i][j];
            }
            cols.append(sum).append(j < c - 1 ? " " : "");
        }
        System.out.println(rows);
        System.out.println(cols);
    }
}

Output

Answer