import java.util.*;
public class Main {
public static void main(String[] args) {
// Jessie Zeng
// AP CS A
// MCQ 40
List<String> students = new ArrayList<String>();
students.add("Alex");
students.add("Bob");
students.add("Carl");
for (int k = 0; k < students.size(); k++)
{
System.out.print(students.set(k, "Alex") + " ");
}
System.out.println();
for (String str : students)
{
System.out.print(str + " ");
}
// Output:
// Alex Bob Carl
// Alex Alex Alex
}
}