Yea, hash maps would work as well. It's just that sets are more suitable as we don't have to store a key-value pair.
Fun fact: Sets are implemented with hash maps! unordered_set in C++11 uses hash maps behind the scenes.
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Yea, hash maps would work as well. It's just that sets are more suitable as we don't have to store a key-value pair.
Fun fact: Sets are implemented with hash maps!
unordered_setin C++11 uses hash maps behind the scenes.