TreeSet

A TreeSet is a type of collection in programming that stores unique items in sorted order. Imagine a neatly organized set of playing cards where duplicates are not allowed, and the cards are always arranged from lowest to highest. It automatically keeps items sorted as you add or remove elements, making searches and retrievals efficient. TreeSet is especially useful when you need to maintain a collection of unique, ordered data, such as a list of sorted names or numbers, without manual sorting efforts.