Java—A+B for Input-Output Practice

小灰灰 2022-12-06 01:18 246阅读 0赞

Java—A+B for Input-Output Practice

Description
Your task is to calculate the sum of some integers
Input
Input contains an integer N in the first line, and then N lines follow. Each line starts with a integer M, and then M integers follow in the same line
Output
For each group of input integers you should output their sum in one line, and you must note that there is a blank line between outputs.
Sample
Input
3
4 1 2 3 4
5 1 2 3 4 5
3 1 2 3
Output
10

15

6

  1. import java.util.Scanner;
  3. public class Main {
  6.     public static void main(String[] args) {
  8.         // TODO Auto-generated method stub
  9.         Scanner reader = new Scanner(System.in);
  10.         int a, m, n, i, j, sum;
  11.         m = reader.nextInt();
  12.         for (i = 0; i < m; i++) {
  14.             sum = 0;
  15.             n = reader.nextInt();
  16.             for (j = 0; j < n; j++) {
  18.                 a = reader.nextInt();
  19.                 sum = sum + a;
  20.             }
  21.             System.out.println(sum);
  22.             if (i != m - 1) {
  24.                 System.out.print("\n");
  25.             }
  26.         }
  27.         reader.close();
  28.     }
  30. }

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