C++11: Standard Hash Table vs Array
An example of an AI chatbot conversation about C++11 hash tables and arrays.
What are the main differences between a hash table and an array in C++11?
The main differences include data access speed, memory usage, and how they handle collisions. Arrays provide O(1) access time, while hash tables can vary.
When should I use a hash table instead of an array?
Use a hash table when you need fast lookups, insertions, and deletions, especially with non-sequential keys.
Can you explain how collision resolution works in hash tables?
Collision resolution can be handled through methods like chaining or open addressing, which help manage multiple entries at the same index.
What are the performance implications of using a hash table?
Hash tables generally offer average-case O(1) time complexity for lookups, but can degrade to O(n) in worst-case scenarios if not managed properly.
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