How do hash maps and unordered maps differ in memory usage?

How do hash maps and unordered maps differ in memory usage?

Hash maps typically use more memory due to their need for additional space for handling collisions and maintaining load factors.

Can you explain what collisions are in this context?

Collisions occur when two keys hash to the same index in the map, requiring additional structures to resolve them.

So, does that mean unordered maps are more memory efficient?

Yes, unordered maps can be more memory efficient since they often use simpler structures and may not require as much overhead.

Are there any trade-offs in performance between the two?

Yes, while unordered maps may use less memory, hash maps can offer faster access times due to their optimized collision handling.