Alll subsequences problem

#1

import java.util.*;
public class Main {
public static void main(String args[]) {
Scanner cin = new Scanner(System.in);
int n = cin.nextInt();
while(n>0){
String str = cin.next();
printSS(str,"");
n–;
}

}
public static void printSS(String s,String ans){
   if(s.length() == 0){
	   System.out.println(ans);
      return ;
   }
   char cc  = s.charAt(0);
   String res = s.substring(1);
   printSS(res,ans);
   printSS(res,ans+cc);
}

}===========I have printed all subsequences but how to do it in lexicographical order

#2

hi @AbhishekAhlawat1102
in order to print in lexicographical order you have to add all the sub-sequence into an arrayList and then sort the arrayList.

#3

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