fork download 
  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.  
  12.     int[] arr={9,1,7,13,3};
  13.     int i = 0;
  14.     int res = SubsetSum(arr, 22, 0, 0);
  15.     while (res > 0) {
  16.     	if ((res & 1) > 0) 
  17.     	    System.out.println(i);
  18.     	i++;
  19.     	res >>= 1;
  20.     }	    
  21. }   
  22.  
  23. public static int SubsetSum(int[] arr, int sum, int index, int used){
  24.     if(sum==0)
  25.         return used;
  26.     if(sum<0 | index>=arr.length)
  27.         return 0;
  28.        int a = SubsetSum(arr,sum,index+1, used);
  29.        int b = SubsetSum(arr,sum-arr[index],index+1, used | (1 << index));
  30.        if (a > 0)
  31.           return a;
  32.        else
  33.           return b;
  34. }  
  35. }
Success #stdin #stdout 0.04s 2184192KB
comments (?)
stdin 
Standard input is empty
stdout 
0
3
https://ideone.com/aTWBZb
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!