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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. public class Main
  6. {
  7. 	public static void main (String[] args) throws java.lang.Exception
  8. 	{
  9. 		List<String> ans = new ArrayList<String>();
  10. 		shap(7, 1, ans);
  11. 		//System.out.println(ans);
  12. 		for(int i = 0;i < ans.size();i++){
  13. 			System.out.println(ans.get(i));
  14. 		}
  15. 	}
  16.  
  17. 	public static void shap(int numberinput, int currentLevel, List<String> ans) {
  18.     	if(currentLevel == numberinput+1) return;
  19.     	String val = "";
  20.     	for(int i = 1;i <= numberinput;i++){
  21.     		if(i == currentLevel || i == (numberinput+1-currentLevel)) val += "X";
  22.     		else val += " ";
  23.     	}
  24.     	ans.add(val);
  25.     	shap(numberinput, currentLevel+1, ans);
  26. 	}
  27. }
Success #stdin #stdout 0.09s 320512KB
comments (?)
stdin 
Standard input is empty
stdout 
X     X
 X   X 
  X X  
   X   
  X X  
 X   X 
X     X
https://ideone.com/RioL9g
language:
Java (HotSpot 12)
created:
10 years ago
visibility:
public

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