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  1. import java.util.Scanner;
  2.  
  3. public class Test {
  4.     public static void main(String[] args) {
  5.         Scanner in = new Scanner(System.in);
  6.  
  7.         int n = in.nextInt();
  8.         int count = 1, space = 0;
  9.         for (int i = 1; i < 2 * n; i++) {
  10.             if (i <= n) {
  11.                 space++;
  12.  
  13.             } else {
  14.                 space--;
  15.             }
  16.  
  17.             for (int spc = n - space; spc > 0; spc--) {
  18.                 System.out.print(" ");
  19.             }
  20.             for (int j = 0; j < count; j++) {
  21.                 System.out.print(i > 9 ? i % 10 : i);
  22.             }
  23.             if (i < n) {
  24.                 count = count + 2;
  25.             } else {
  26.                 count = count - 2;
  27.             }
  28.             System.out.println();
  29.         }
  30.         in.close();
  31.     }
  32. }
  33.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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8
compilation info 
Main.java:3: error: class Test is public, should be declared in a file named Test.java
public class Test {
       ^
1 error
stdout
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Standard output is empty
https://ideone.com/TOwhmi
language:
Java (HotSpot 12)
created:
1 year ago
visibility:
public

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