fork download
copy 
  1. import java.util.Scanner;
  2.  
  3. public class Main {
  4.     public static void main(String[] args) {
  5.         final int n = 8, m = 8;
  6.         int[][] mas = new int[n][m];
  7.  
  8.         // Example: generate random numbers as in your pattern
  9.         for (int i = 0; i < n; i++)
  10.             for (int j = 0; j < m; j++)
  11.                 mas[i][j] = (int)(Math.random() * 100 - 50);
  12.  
  13.         // Swap max in every row with diagonal element
  14.         for (int i = 0; i < n; i++) {
  15.             int maxIdx = 0;
  16.             for (int j = 1; j < m; j++)
  17.                 if (mas[i][j] > mas[i][maxIdx])
  18.                     maxIdx = j;
  19.  
  20.             // Swap if max is not diagonal
  21.             int temp = mas[i][i];
  22.             mas[i][i] = mas[i][maxIdx];
  23.             mas[i][maxIdx] = temp;
  24.         }
  25.  
  26.         // Print result
  27.         for (int i = 0; i < n; i++) {
  28.             for (int j = 0; j < m; j++)
  29.                 System.out.printf("%4d", mas[i][j]);
  30.             System.out.println();
  31.         }
  32.     }
  33. }
Success #stdin #stdout 0.16s 55924KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
  43   8  34 -25  31  40 -42  10
  31  41  10   5  38  20  10  32
 -15   9  40 -41 -48   5   4  33
 -42  17  -6  36 -40  -4 -12 -49
 -31  23  15 -30  48  25 -44  19
 -33  20 -10  10 -44  33  15 -15
 -49  31 -22  21   7 -41  43 -39
 -47  38   1 -19   0  33 -42  41
https://ideone.com/AVbVjA
language:
Java (HotSpot 12)
created:
15 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!