How do you work with Rust's standard collections (Vec, HashMap, etc.)?
Rust's standard collections, such as Vec, HashMap, and HashSet, are commonly used in Rust programs for managing and manipulating data collections. Here are some basic examples of how these collections can be used:
Vec : A Vec ("vector") is Rust's built-in dynamic array. To create a new vector, you can use the Vec::new() method or a shorthand notation like vec![1, 2, 3] to create a vector with initial values.
HashMap : A HashMap is Rust's built-in hash table implementation. It allows you to store key-value pairs, where each key is unique.
HashSet : A HashSet is similar to a HashMap but only stores unique keys without any associated values.
