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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.     static void getPermutations(int index, int[] output, ArrayList<int[]> solutions, int[] boxes)
  11.     {
  12.        if (index == output.length)
  13.        {
  14.        	  int[] temp = new int[output.length];
  15.        	  System.arraycopy(output, 0, temp, 0, output.length);
  16.           solutions.add(temp);
  17.           return;
  18.        }
  19.        for (int b: boxes)
  20.        {
  21.           output[index] = b;
  22.           getPermutations(index + 1, output, solutions, boxes);
  23.        }
  24.     }
  25.  
  26. 	public static void main (String[] args) throws java.lang.Exception
  27. 	{
  28. 		ArrayList<int[]> solutions = new ArrayList<>();
  29. 		int objectCount = 3;
  30. 		getPermutations(0, new int[objectCount], solutions, new int[]{-1, 0});
  31. 		for (int[] temp: solutions)
  32. 		{
  33. 			for (int i: temp)
  34. 			    System.out.print(i + "  ");
  35. 			System.out.println();
  36. 		}
  37. 	}
  38. }
Success #stdin #stdout 0.06s 380224KB
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stdin
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Standard input is empty
stdout
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-1  -1  -1  
-1  -1  0  
-1  0  -1  
-1  0  0  
0  -1  -1  
0  -1  0  
0  0  -1  
0  0  0
https://ideone.com/oGBEQo
language:
Java (12.0.1)
created:
11 years ago
visibility:
secret

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