This program is designed to provide a matcher that compares strings ending in sequences of digits in a way that makes sense to a human. Explain step by step what was developed in the DirectoryComparator file to understand how it works.

import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; public class DirectorySortDemo { public static void main(String[] args) { } } String[] dirNames = {"dir12", "dir5", "dir9", "dir1", "dir4", "lab10", "lab2", "lab7", "lab17", "lab8", "quiz8", "quiz10", "quiz11", "quiz12", "dir11", "dir8", "dir7", "dir15", "dir3"}; ArrayList directories = new ArrayList (Arrays.asList(dirNames)); System.out.println("Unsorted List:"); System.out.println(directories); Collections.sort(directories, new DirectoryComparator()); System.out.println(); System.out.println("Sorted List:"); System.out.println(directories); import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; public class DirectorySortDemo { public static void main(String[] args) { } } String[] dirNames = {"dir12", "dir5", "dir9", "dir1", "dir4", "lab10", "lab2", "lab7", "lab17", "lab8", "quiz8", "quiz10", "quiz11", "quiz12", "dir11", "dir8", "dir7", "dir15", "dir3"}; ArrayList directories = new ArrayList (Arrays.asList(dirNames)); System.out.println("Unsorted List:"); System.out.println(directories); Collections.sort(directories, new DirectoryComparator()); System.out.println(); System.out.println("Sorted List:"); System.out.println(directories);