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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 main (String[] args) throws java.lang.Exception
  11. 	{
  12. 	printArr(hui(5,5));
  13. 	}
  14.  
  15. 	 private static int[][] hui(int a, int b) {
  16.         int[][] arr = new int[a][b];
  17.         for (int i = 0; i < a; i++) {
  18.             int peak = i < a / 2 ? i + 1 : a - i;
  19.             for (int j = 0; j < b; j++) {
  20.                 int val = peak <= j ? peak > b - j ? b - j : peak : j + 1;
  21.                 arr[i][j] = val;
  22.             }
  23.         }
  24.         return arr;
  25.     }
  26.   private static void printArr(int[][] hui) {
  27.         for (int[] x : hui) {
  28.             for (int y : x) {
  29.                 System.out.print(y + "\t");
  30.             }
  31.             System.out.println();
  32.         }
  33.     }
  34.  
  35. }
Success #stdin #stdout 0.08s 2184192KB
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stdin
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Standard input is empty
stdout
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1	1	1	1	1	
1	2	2	2	1	
1	2	3	2	1	
1	2	2	2	1	
1	1	1	1	1
https://ideone.com/KL0qc9
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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