Answer Posted / suchitpuri

i have written a program in java which print all the subsets
i am using binary representation to calculate the subset
ie 100 means a
101 means ac
111 abc and so on


/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

/**
*
* @author spuri
*/
public class printSubsets
{

static char input[] = { 'a', 'b', 'c' };

/**
* @param args
* the command line arguments
*/
public static void main(String[] args)
{
// TODO code application logic here


Integer i = new Integer((int) Math.pow(2, input.length));

for (int k = 0; k < i; k++)
{
if (k == 0)
{
System.out.print("{}");
}
else
{
String temp = new String();
char op[] = Integer.toBinaryString(k).toCharArray();
if (op.length <= input.length)
{
for (int j = 0; j < (input.length - op.length); j++)
{
temp = temp + "0";
}
}
temp = temp + new String(op);
printSequence(temp.toCharArray());

}

}

}

public static void printSequence(char[] op)
{

System.out.print("{");

for (int i = 0; i < op.length; i++)
{

if (op[i] == '1')
{
System.out.print(input[i]);

}
}
System.out.print("}");

}
}

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