Mis oli HashMap andmestruktuuri loomise taga ja millised on selle eelised?

HashMap is created for efficient data storage and quick access to data via a key. The main idea is to use a hash function to convert the key into an array index, allowing insert, search, and delete operations to be performed in approximately O(1) time.

Advantages of HashMap:

• Fast access to elements via the key.
• Flexibility in working with different types of keys and values.
• Automatic collision management (e.g., using chaining or open addressing).
• Very suitable for implementing caches, indexes, and other data structures where search speed is important.

Thus, HashMap solves the problem of slow search in lists or arrays, providing efficient data access.