Everything works fine, but third requirement won't pass :/
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
ArrayList<String> lista = new ArrayList<String>();
while (true) {
String s = reader.readLine();
if (s.isEmpty()) break;
lista.add(s);
}
String z = null;
for (String s: lista){
z+=s;
}
if (z.length()%2==0) {
for (int i = 0; i < lista.size(); i++) {
System.out.print(lista.get(i) + " ");
System.out.println(lista.get(i));
}
} else {
for (int i = 0; i < lista.size(); i++) {
System.out.print(lista.get(i) + " ");
System.out.print(lista.get(i) + " ");
System.out.println(lista.get(i));
}
}
}
}
package pl.codegym.task.task07.task0727;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
/*
Zmiana funkcjonalności
*/
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
ArrayList<String> lista = new ArrayList<String>();
while (true) {
String s = reader.readLine();
if (s.isEmpty()) break;
lista.add(s);
}
String z = null;
for (String s: lista){
z+=s;
}
if (z.length()%2==0) {
for (int i = 0; i < lista.size(); i++) {
System.out.print(lista.get(i) + " ");
System.out.println(lista.get(i));
}
} else {
for (int i = 0; i < lista.size(); i++) {
System.out.print(lista.get(i) + " ");
System.out.print(lista.get(i) + " ");
System.out.println(lista.get(i));
}
}
}
}