[POO] aula11 ex4 added
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TiagoRG
parent
ab9fa59d0a
commit
a9944f06f7
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package aula11.ex4;
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import java.util.LinkedList;
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import java.util.Objects;
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public record Company(String code, String name, LinkedList<Flight> flights) {
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@Override
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public boolean equals(Object o) {
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if (this == o) return true;
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if (!(o instanceof Company company)) return false;
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return Objects.equals(code, company.code) && Objects.equals(name, company.name) && Objects.equals(flights, company.flights);
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}
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@Override
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public int hashCode() {
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return Objects.hash(code, name, flights);
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}
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}
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package aula11.ex4;
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import java.util.Objects;
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public record Flight(String code, String origin, Time departure, Time delay, Company company) {
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@Override
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public boolean equals(Object o) {
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if (this == o) return true;
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if (!(o instanceof Flight flight)) return false;
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return Objects.equals(code, flight.code) && Objects.equals(origin, flight.origin) && Objects.equals(departure, flight.departure) && Objects.equals(delay, flight.delay);
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}
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@Override
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public int hashCode() {
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return Objects.hash(code, origin, departure, delay);
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}
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}
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package aula11.ex4;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.*;
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import java.io.*;
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import java.util.stream.Collectors;
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public class FlightManager {
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private final LinkedList<Company> companies = new LinkedList<>();
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private final LinkedList<Flight> flights = new LinkedList<>();
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private String table;
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private String delaysTable;
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private String flightsNTable;
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public void loadCompanies(String filename) {
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Scanner input;
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try {
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input = new Scanner(new FileReader(filename));
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input.nextLine();
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} catch (FileNotFoundException e) {
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throw new RuntimeException(e);
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}
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while(input.hasNext()){
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String line = input.nextLine();
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String[] fields = line.split("\t");
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if(fields.length != 2)
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throw new RuntimeException("Invalid file format");
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this.companies.add(new Company(fields[0], fields[1], new LinkedList<>()));
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}
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}
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public void loadFlights(String filename) {
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Scanner input;
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try {
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input = new Scanner(new FileReader(filename));
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input.nextLine();
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} catch (FileNotFoundException e) {
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throw new RuntimeException(e);
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}
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while (input.hasNext()) {
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String line = input.nextLine();
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String[] fields = line.split("\t");
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if (fields.length != 3 && fields.length != 4)
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throw new RuntimeException("Invalid file format");
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String[] timeStr = fields[0].split(":");
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Time time = new Time(Integer.parseInt(timeStr[0]), Integer.parseInt(timeStr[1]));
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String code = fields[1];
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Company company = this.companies.stream().filter(c -> c.code().equals(code.substring(0, 2))).findFirst().orElse(null);
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String origin = fields[2];
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String[] delayStr;
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try {
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delayStr = fields[3].split(":");
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} catch (IndexOutOfBoundsException e) {
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delayStr = new String[]{"0", "0"};
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}
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Time delay = new Time(Integer.parseInt(delayStr[0]), Integer.parseInt(delayStr[1]));
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Flight flight = new Flight(code, origin, time, delay, company);
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this.flights.add(flight);
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Objects.requireNonNull(company).flights().add(flight);
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}
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}
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public void buildTable() {
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StringBuilder table = new StringBuilder().append("Depart. Flight Company Origin Delay Obs\n");
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for (Flight flight : flights)
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table.append(String.format("%-10s%-10s%-25s%-25s%-8s%s%n", flight.departure(), flight.code(), flight.company().name(), flight.origin(), flight.delay(), flight.delay().isZero() ? "" : "New departure: " + flight.departure().addTime(flight.delay())));
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this.table = table.toString();
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}
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public String getTable() {
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return table;
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}
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public void buildDelaysTable() {
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StringBuilder table = new StringBuilder().append("Company Avg. Delay\n");
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LinkedHashMap<String, Integer> delays = new LinkedHashMap<>();
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for (Company company : companies) {
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Time totalTime = new Time(0, 0);
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int nDelays = 0;
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for (Flight flight : company.flights()) {
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if (!flight.delay().isZero()) {
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totalTime.addTime(flight.delay());
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nDelays++;
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}
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}
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if (nDelays > 0)
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delays.put(company.name(), Time.timeToMinsInt(totalTime) / nDelays);
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}
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delays = (LinkedHashMap<String, Integer>) sortByValue(delays);
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for (String compName : delays.keySet())
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table.append(String.format("%-25s%s%n", compName, Time.minsIntToTime(delays.get(compName))));
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this.delaysTable = table.toString();
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}
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public String getDelaysTable() {
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return delaysTable;
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}
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public void buildFlightsNTable() {
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StringBuilder table = new StringBuilder().append("Origin n Flights\n");
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LinkedHashMap<String, Integer> flightsFromOrigin = new LinkedHashMap<>();
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for (Flight flight : flights)
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flightsFromOrigin.put(flight.origin(), flightsFromOrigin.getOrDefault(flight.origin(), 0) + 1);
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flightsFromOrigin = (LinkedHashMap<String, Integer>) sortByValue(flightsFromOrigin);
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for (String origin : flightsFromOrigin.keySet())
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table.append(String.format("%-25s%s%n", origin, flightsFromOrigin.get(origin)));
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this.flightsNTable = table.toString();
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}
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public String getFlightsNTable() {
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return flightsNTable;
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}
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public void storeTable(String filename) {
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Path path = Path.of(filename);
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try {
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Files.writeString(path, getTable());
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} catch (IOException e) {
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try {
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Files.createFile(path);
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storeTable(filename);
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} catch (IOException ex) {
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throw new RuntimeException(ex);
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}
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}
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}
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private static Map<String, Integer> sortByValue(Map<String, Integer> unsortMap) {
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List<Map.Entry<String, Integer>> list = new LinkedList<>(unsortMap.entrySet());
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// Sorting the list based on values
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list.sort((o1, o2) -> o2.getValue().compareTo(o1.getValue()) == 0
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? o2.getKey().compareTo(o1.getKey())
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: o2.getValue().compareTo(o1.getValue()));
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return list.stream().collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue, (a, b) -> b, LinkedHashMap::new));
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}
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}
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@ -0,0 +1,21 @@
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package aula11.ex4;
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public class Main {
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public static void main(String[] args) {
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FlightManager fm = new FlightManager();
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fm.loadCompanies("datafiles/aula11/ex4/companhias.txt");
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fm.loadFlights("datafiles/aula11/ex4/voos.txt");
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fm.buildTable();
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System.out.println(fm.getTable());
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fm.buildDelaysTable();
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System.out.println(fm.getDelaysTable());
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fm.buildFlightsNTable();
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System.out.println(fm.getFlightsNTable());
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fm.storeTable("datafiles/aula11/ex4/Infopublico.txt");
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}
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}
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@ -0,0 +1,52 @@
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package aula11.ex4;
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public class Time {
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private int hour;
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private int minute;
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public Time(int hour, int minute) {
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if (hour < 0 || hour > 23 || minute < 0 || minute > 59)
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throw new IllegalArgumentException("Invalid time");
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this.hour = hour;
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this.minute = minute;
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}
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public Time addTime(Time time) {
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int newHour = hour + time.hour();
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int newMinute = minute + time.minute();
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if (newMinute >= 60) {
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newHour++;
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newMinute -= 60;
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}
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if (newHour >= 24)
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newHour -= 24;
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this.hour = newHour;
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this.minute = newMinute;
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return new Time(newHour, newMinute);
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}
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public boolean isZero() {
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return hour == 0 && minute == 0;
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}
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@Override
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public String toString() {
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return String.format("%02d:%02d", hour, minute);
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}
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public static int timeToMinsInt(Time time) {
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return time.hour() * 60 + time.minute();
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}
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public static Time minsIntToTime(int mins) {
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return new Time(mins/60, mins%60);
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}
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public int hour() {
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return hour;
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}
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public int minute() {
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return minute;
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}
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}
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