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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) {
  11. 	    int max = 6;
  12. 	    int padLength = (int) Math.ceil(Math.log10(Math.pow(2, max) + 1)) + 2;
  13. 	    for (int i = 0; i < max; i++) {
  14. 	        for (int j = 1; j < max - i; j++) {
  15. 	            System.out.print(pad(" ", padLength));
  16. 	        }
  17. 	        for (int k = 0; k <= i; k++) {
  18. 	            System.out.print(pad(Math.pow(2, k), padLength));
  19. 	        }
  20. 	        for (int k = i - 1; k >= 0; k--) {
  21. 	            System.out.print(pad(Math.pow(2, k), padLength));
  22. 	        }
  23. 	        System.out.println();
  24. 	    }
  25. 	}
  26.  
  27. 	public static String pad(double d, int l) {
  28. 	    Integer i = (int) d;
  29. 	    return pad(i.toString(), l);
  30. 	}
  31.  
  32. 	public static String pad(String s, int l) {
  33. 	    return String.format("%-" + l + "s", s);
  34. 	}
  35. }
Success #stdin #stdout 0.07s 380160KB
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stdin
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Standard input is empty
stdout
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                    1   
                1   2   1   
            1   2   4   2   1   
        1   2   4   8   4   2   1   
    1   2   4   8   16  8   4   2   1   
1   2   4   8   16  32  16  8   4   2   1
https://ideone.com/7YKfrT
language:
Java (12.0.1)
created:
9 years ago
visibility:
public

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