Explain what a collision situation is when using a hash function and how it affects the operation of a hash table.

A collision in a hash function occurs when different keys produce the same hash value. In a hash table, this means that multiple elements attempt to occupy the same slot.

Impact of collisions:

• The performance of insert, search, and delete operations deteriorates because multiple elements need to be processed in the same slot.
• Methods such as chaining (linked lists) or open addressing are used to resolve collisions.

Example: if the hash function for the keys "apple" and "pleap" returns the same index, both elements will be stored in the same bucket, and during search, all elements in this bucket need to be checked, which reduces efficiency.