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- import java.lang.reflect.Array;
- import java.time.LocalDateTime;
- import java.util.*;
- import java.util.stream.Collectors;
- /**
- * Partial exam II 2016/2017
- */
- class File implements Comparable<File>
- {
- String name;
- Integer size;
- LocalDateTime createdAt;
- File(String name, int size, LocalDateTime createdAt)
- {
- this.name = name;
- this.size = size;
- this.createdAt = createdAt;
- }
- @Override
- public int compareTo(File o) {
- if(createdAt.compareTo(o.createdAt)==0)
- {
- if(name.compareTo(o.name)==0)
- {
- return size.compareTo(o.size);
- }
- else
- return name.compareTo(o.name);
- }
- else return createdAt.compareTo(o.createdAt);
- }
- @Override
- public String toString() {
- return String.format("%-10s %5dB %s", name,size,createdAt);
- }
- }
- class FileSystem
- {
- Map<Character,File> files;
- FileSystem()
- {
- files = new HashMap<>();
- }
- public void addFile(char folder, String name, int size, LocalDateTime createdAt)
- {
- files.put(folder, new File(name, size, createdAt));
- }
- public List<File> findAllHiddenFilesWithSizeLessThen(int size)
- {
- return files.values().stream()
- .filter(val -> val.name.startsWith("."))
- .filter(val -> val.size<size)
- .collect(Collectors.toList());
- }
- public int totalSizeOfFilesFromFolders(List<Character> folders)
- {
- int size = 0;
- for(char f : folders)
- {
- if(files.containsKey(f))
- {
- size+=files.get(f).size;
- }
- }
- return size;
- }
- public Map<Integer, Set<File>> byYear()
- {
- Map<Integer,Set<File>> map = new TreeMap<>();
- Set<File>set = new TreeSet<>();
- files.values().stream()
- .forEach(f -> {
- set.add(f);
- map.put(f.createdAt.getYear(),set);
- });
- return map;
- }
- /*public Map<String, Long> sizeByMonthAndDay()
- {
- }*/
- }
- public class FileSystemTest {
- public static void main(String[] args) {
- FileSystem fileSystem = new FileSystem();
- Scanner scanner = new Scanner(System.in);
- int n = scanner.nextInt();
- scanner.nextLine();
- for (int i = 0; i < n; i++) {
- String line = scanner.nextLine();
- String[] parts = line.split(":");
- fileSystem.addFile(parts[0].charAt(0), parts[1],
- Integer.parseInt(parts[2]),
- LocalDateTime.of(2016, 12, 29, 0, 0, 0).minusDays(Integer.parseInt(parts[3]))
- );
- }
- int action = scanner.nextInt();
- if (action == 0) {
- scanner.nextLine();
- int size = scanner.nextInt();
- System.out.println("== Find all hidden files with size less then " + size);
- List<File> files = fileSystem.findAllHiddenFilesWithSizeLessThen(size);
- files.forEach(System.out::println);
- } else if (action == 1) {
- scanner.nextLine();
- String[] parts = scanner.nextLine().split(":");
- System.out.println("== Total size of files from folders: " + Arrays.toString(parts));
- int totalSize = fileSystem.totalSizeOfFilesFromFolders(Arrays.stream(parts)
- .map(s -> s.charAt(0))
- .collect(Collectors.toList()));
- System.out.println(totalSize);
- } else if (action == 2) {
- System.out.println("== Files by year");
- Map<Integer, Set<File>> byYear = fileSystem.byYear();
- byYear.keySet().stream().sorted()
- .forEach(key -> {
- System.out.printf("Year: %d\n", key);
- Set<File> files = byYear.get(key);
- files.stream()
- .sorted()
- .forEach(System.out::println);
- });
- } else if (action == 3) {
- /* System.out.println("== Size by month and day");
- Map<String, Long> byMonthAndDay = fileSystem.sizeByMonthAndDay();
- byMonthAndDay.keySet().stream().sorted()
- .forEach(key -> System.out.printf("%s -> %d\n", key, byMonthAndDay.get(key)));*/
- }
- scanner.close();
- }
- }
- // Your code here
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