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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. public static void rotation90Droite(int [][] vals) {
  11.  
  12.     int e = vals.length-1;
  13.     int c = e / 2;
  14.     for (int i = 0; i <= c ; i++) {
  15.         for (int j = i; j <e - i; j++) {
  16.             int t   = vals[i][j];
  17.  
  18.  
  19.             vals[i][j] = vals[e - j][i];
  20.  
  21.             vals[e - j][i] = vals[e - i][e - j];
  22.  
  23.             vals[e - i][e - j] = vals[j][e - i];
  24.  
  25.             // This line is corrected: "e - j" -> "e - i"
  26.             vals[j][e - i] = t;
  27.         }
  28.     }
  29. }
  30. public static void printMatrix(int[][] Matrix) {
  31.  
  32.     for(int i = 0; i < Matrix.length; i++) {
  33.         for (int j = 0; j < Matrix.length; j++) {
  34.             System.out.print(Matrix[i][j]+ " ");
  35.         }
  36.         System.out.println(" ");
  37.     }
  38. }
  39.  
  40.  
  41. public static void main(String[] args) {
  42.  
  43.     int[][] vals = {{1,2,3,4},{5,6,7,8},{9,10,11,12},{13,14,15,16}} ;
  44.     printMatrix(vals);
  45.     System.out.println(" ");
  46.     rotation90Droite(vals);
  47.     printMatrix(vals);
  48.  
  49.     }
  50. }
Success #stdin #stdout 0.09s 27880KB
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Standard input is empty
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1 2 3 4  
5 6 7 8  
9 10 11 12  
13 14 15 16  
 
13 9 5 1  
14 10 6 2  
15 11 7 3  
16 12 8 4
https://ideone.com/AZ1yCq
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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