MOOC.fi - PersonalDetails - Solution 1

PersonalDetails.java

import java.util.ArrayList;
import java.util.Scanner;
 
public class PersonalDetails {
 
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
 
        ArrayList<Integer> birthYears = new ArrayList<>();
        ArrayList<Integer> nameLengths = new ArrayList<>();
        ArrayList<String> people = new ArrayList<>();
 
        while (true) {
            String input = scanner.nextLine();
 
            if (input.equals("")) {
                break;
            }
 
            String[] person = input.split(",");
            int nameLength = person[0].length();
            int birthYear = Integer.valueOf(person[1]);
 
            people.add(input);
            birthYears.add(birthYear);
            nameLengths.add(nameLength);
        }
 
        int longestNameLength = nameLengths.stream().max(Integer::compare).get();
        String longestName = "";
 
        for (String person : people) {
            String[] parts = person.split(",");
 
            if (parts[0].length() == longestNameLength) {
                System.out.println("Longest name: " + parts[0]);
                break;
            }
        }
 
        int yearsSum = 0;
 
        for (int birthYear : birthYears) {
            yearsSum += birthYear;
        }
 
        double averageBirthYear = 1.0 * yearsSum / birthYears.size();
 
        // System.out.println("Longest name: " + longestName);
        System.out.println("Average of the birth years: " + averageBirthYear);
 
    }
}