Can someone please explain to me how to do this. Step by step so I can reverse engineer myself.
package com.codegym.task.task07.task0717;
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>();
for (int i = 0; i < 10; i++){
String s = reader.readLine();
list.add(s);
}
ArrayList<String> result = doubleValues(list);
for(String input: result){
System.out.println(input);
}
// Display result
}
public static ArrayList<String> doubleValues(ArrayList<String> list) {
ArrayList<String> result = new ArrayList<String>();
for (int j = 0; j < 20; j++){
result.add(list.get(j));
result.add(list.get(j));
}
return result;
}
}