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
design an algorithm for searching for duplicate contact entries in a list of emails.
user
the algorithm should first read each email address to determine if the address is unique or a duplicate of an existing address. to ensure accuracy, the data should be broken down into tokens based on the local-part (before the @) and the domain-part (after the @). then, these tokens can be compared to other email addresses in the list to identify duplicates. to handle the possibility of typos, a fuzzy matching algorithm can be implemented that accounts for errors in the input. for example, if two entries have matching local-part tokens but different domain-part tokens, a fuzzy matching algorithm can be used to decide whether it should be categorized as a duplicate or a typo. additionally, a binary search tree could be used to compare the tokenized data and determine faster whether an email address is a duplicate or not.
assistant