The Arrays class contains various methods for manipulating arrays (such as sorting and searching). Use the methods of this class to sort an array of strings in increasing order by string length. Strings of the same length should be sorted lexicographically. Hint: Look for a sort method that lets you supply a Comparator.

Note that we've seen the Comparable interface, but not Comparator. A class that implements Comparable has a compareTo method that implements the semantics "I can compare myself to another object". Alternatively, a class that implements the Comparator interface has a compare method that compares two other objects (the implementing class is not one of them).

Use the Java API documentation to help with this. Note that the strings should be loaded from the provided sample file wordlist.txt.