What is the problem
package com.codegym.task.task07.task0717;
import javax.print.DocFlavor;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
/*
Duplicating words
*/
public class Solution {
public static void main(String[] args) throws Exception {
// Read strings from the console and declare an ArrayList here
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
ArrayList<String> list = new ArrayList<String>();
while(true) {
String s = reader.readLine();
if(s.isEmpty()) break;
list.add(s);
}
ArrayList<String> result = doubleValues(list);
for(String x : result) {
System.out.println(x);
}
// Display result
}
public static ArrayList<String> doubleValues(ArrayList<String> list) {
//write your code here
ArrayList<String> dubl = new ArrayList<String>();
for(int i = 0; i < list.size(); i++) {
dubl.add(list.get(i));
dubl.add(list.get(i));
}
return dubl;
}
}