as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
suggest a data structure to store user data.
user
a hash table is an ideal data structure to store user data. hash tables allow for efficient retrieval of user data, as they use a key-value pair system to store data. this means that a given key corresponds to a specific value, making it easy to look up a specific user's data when needed. furthermore, hash tables are also suitable for large data sets, as they can grow and shrink dynamically and have a constant time complexity for insertion and removal of data.
assistant