What types of collections do you use in your projects and why?

In QA and automation testing, different types of collections are often used depending on the task:

• Lists — for ordered storage of elements with access by index. For example, a list of test cases to be executed in a specific order.
• Sets — for storing unique elements, such as unique error identifiers or test data without duplicates.
• Maps — for storing key-value pairs, such as test parameters or results associated with test names.

The choice of collection depends on requirements for uniqueness, order, and the speed of add, search, and delete operations. For example, HashSet provides fast search and uniqueness, LinkedList is convenient for sequential processing, and HashMap is suitable for quick access by key.