Challenge problem

#1

what is wrong in this code?
it is showing compilation error.

import java.util.*;

public class Main {

public static void main(String args[]) {
	Scanner scn = new Scanner(System.in);
	String str = scn.next();
	System.out.println(getSS(str));
}
public static ArrayList<String> getSS(String str) {
	if (str.length() == 0) {
		ArrayList<String> base = new ArrayList();
		base.add("");
		return base;
	}
	char cc = str.charAt(0);
	String ros = str.substring(1);
	ArrayList<String> myResult = new ArrayList();
	ArrayList<String> recResult = getSS(ros);
	for (int i = 0; i < recResult.size(); i++) {
		myResult.add(recResult.get(i));
		myResult.add(cc + recResult.get(i));
	}
	return myResult;
}

}

#2

@VinayakSingh11111 have you read this line bro?
First line contains an integer N , the no of strings.
Next, N lines follows one string per line

If ya query is clear mark it resolved and rate full.
Happy coding!

#3

but it is not compiling

#4

Always include angular bracket on left side also, if you check on eclipse your code will be giving ya a warning, don’t ignore them because online judges don’t accept them.
So correct way is ArrayList< String> base = new ArrayList<>();

Also add support for multiple test case also as given in input!