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package com.javarush.task.task07.task0717;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
/*
Удваиваем слова
*/
public class Solution {
public static void main(String[] args) throws Exception {
ArrayList<String> list = new ArrayList<String>();
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
for (int i=0; i<10; i++)
{
String s = reader.readLine();
list.add (s);
}
ArrayList<String> result = doubleValues(list);
for(int i=0; i<list.size(); i++)
{
String s3 = list.get(i);
System.out.println(s3);
}
}
public static ArrayList<String> doubleValues(ArrayList<String> list) {
for (int i=0; i<list.size(); i++)
{
String s1 = list.get(i);
int i1 = i++;
list.add(i1,s1);
}
return null;
}
}