Can you explain how the Set data structure is implemented and functions?

The Set data structure represents a collection of unique elements, meaning it cannot contain duplicates. The main operations supported by Set include adding an element, removing an element, and checking for the presence of an element.

The internal implementation of Set can vary depending on the programming language, but often a hash table or a balanced tree is used to ensure quick uniqueness checks and access.

Example in JavaScript:

const mySet = new Set();
mySet.add(1);
mySet.add(2);
mySet.add(1); // will not be added, as 1 already exists
console.log(mySet.has(1)); // true
console.log(mySet.size); // 2

Thus, Set is convenient when you need to store a collection of unique values and quickly check their presence.