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  1. class M{
  2.   static String c(int i){
  3.     String s = "*",
  4.            a[][] = new String[i][i],
  5.            t,
  6.            r = "";
  7.     int j = 0,
  8.         k,
  9.         z = i-1,
  10.         m = (int)Math.pow(10, z);
  11.     for(; j < i; j++){
  12.       for(k = 0; k < i; a[j][k++] = (new java.util.Random().nextInt((int)Math.pow(10, i) - m + 1) + m)+"");
  13.     }
  14.     for(j = 0; j < i; k = j % 4,
  15.                       t = a[m = k < 2 ? 0 : z][k],
  16.                       a[m][j++] = k < 1 | k > 2
  17.                                                ? s + t.substring(1, i)
  18.                                                : t.substring(0, z) + s);
  19.  
  20.     for(j = 0; j < i; j++,
  21.                       r += "\n"){
  22.       for(k = 0; k < i; r += a[j][k++] + " ");
  23.     }
  24.     return i < 1
  25.             ? ""
  26.             : i < 2
  27.                ? s
  28.                : r;
  29.   }
  30.  
  31.   public static void main(String[] a){
  32.     for (int i = 0; i < 6; i++) {
  33.       System.out.println(c(i));
  34.       System.out.println();
  35.     }
  36.   }
  37. }
Success #stdin #stdout 0.03s 711168KB
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stdin
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Standard input is empty
stdout
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*

*3 7* 
10 89 


*08 60* 957 
536 501 286 
256 749 91* 


*133 250* 5762 2643 
5456 6259 8403 5347 
6176 1338 9702 4027 
8132 2566 208* *893 


*1294 4755* 62803 22381 *1294 
50415 55585 47494 64356 32857 
46209 51213 19643 26745 93666 
95255 80366 95807 54279 20129 
65284 22010 2191* *4465 21190
https://ideone.com/l9vjQ1
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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