WROTE A CODE TO GENERATE ALL POSSIBLE PERMUTATIONS OF A SET OF 9 ELEMENTS
HAVE A LOOK

import java.io.*;

import java.util.*;

class gpint{

public static void main(String args[])throws Exception

{

int i=0,min=0,max=0,j=0,k=0;

String s="",mi="",ma="",t="",t1="";

boolean bo = true, bo2 = false;

System.out.println("enter the elements of set for generating the permutations (upto 9 elements)");

BufferedReader b=new BufferedReader(new InputStreamReader(System.in));

s=b.readLine();

if (s.equals(""))

{

System.out.println("no elements inserted");

System.exit(0);

}

System.out.println("****************************************************************************");

int a[]=new int[s.length()];

char b1[]=s.toCharArray();

char b2[]=new char[b1.length];

for (i = 0; i <>

b2[i] = ("" + (i + 1)).charAt(0);

Arrays.sort(b1);

for(i=0;i

mi=mi+1;

ma=ma+s.length();

}

min=Integer.parseInt(mi);

max=Integer.parseInt(ma);

for(i=min;i<=max;i++)

{bo=true;

t=""+i;

t1="";

char b3[]=t.toCharArray();

for(j=0;j

{bo2=false;

for(k=0;k

if(b3[j]==b2[k])

{

bo2=true;

break;

}

if(!bo2)

bo=false;

}

if(!bo)

continue;

else{

for(j=0;j

System.out.print(b1[Integer.parseInt(""+t.charAt(j))-1]);

System.out.println();

}

}

}}

other solution generating permutations without repeated elements

import java.io.*;

import java.util.*;

class gpint2{

public static char a[]=null;

public static void main(String args[])throws Exception{

BufferedReader b=new BufferedReader(new InputStreamReader(System.in));

System.out.println("enter the elements of set whose permutations are to be generated");

a = (b.readLine()).toCharArray();

Arrays.sort(a);

System.out.println("************GENERATED PERMUTATIONS*****************");

perm(0);

}

public static void perm(int i)

{char t='*';

int j = 0;

for (int n = i; n <>

{

if (i == n)

print();

else

{

for (j = i+1; j <>

{ t = a[i];

a[i]=a[j];

a[j] = t;

perm(i + 1);

t = a[i];

a[i] = a[j];

a[j] = t;

}

}

}

}

public static void print()

{

for (int i = 0; i <>

System.out.print(a[i]);

System.out.println();

}

}