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Why Should I Care?

Have you ever wanted to know:

• How does the hash map, associative array, or dictionary data structure in your language work?
• When is it appropriate to use a hash table to store items?
• How do we deal with ‘collisions’ in a hash table?

In 5 Minutes or Less:

Imagine we want to store a list of users so that we can find them later using their names.

Source: DZone