Somebody know, somebody see?
package pl.codegym.task.task07.task0717;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
/*
Duplikowanie słów
*/
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader r = new BufferedReader(new InputStreamReader(System.in));
ArrayList<String> lista = new ArrayList<String>();
for (int i=0; i<10;i++) lista.add(r.readLine());
ArrayList<String> wynik = doubleValues(lista);
//for (int i=0;i<lista.size();i++)
//System.out.println(lista.get(i));
for (String s : lista) {
System.out.println(s);
}
}
public static ArrayList<String> doubleValues(ArrayList<String> lista) {
for (int i=0;i<lista.size();i=i+2)
{
lista.add(i+1,lista.get(i));
}
return null;
}
}