/** * Find the person with the minimum age in a room with the maximum number of people * At the end of the solution method, call writeSolution(user, room) */

java import java.util.List;

class User { int age; // other fields and methods }

class Room { List<User> users; // other fields and methods }

public class Solution { // Assume there is a list of rooms List<Room> rooms;

void writeSolution(User user, Room room) {
    // implementation of writing the solution
}

void solution() {
    Room maxRoom = null;
    int maxCount = -1;

    // Find the room with the maximum number of people
    for (Room room : rooms) {
        if (room.users.size() > maxCount) {
            maxCount = room.users.size();
            maxRoom = room;
        }
    }

    if (maxRoom == null || maxRoom.users.isEmpty()) {
        // No rooms or the maximum room has no users
        return;
    }

    // Find the user with the minimum age in the found room
    User minAgeUser = maxRoom.users.get(0);
    for (User user : maxRoom.users) {
        if (user.age < minAgeUser.age) {
            minAgeUser = user;
        }
    }

    writeSolution(minAgeUser, maxRoom);
}

}