#面试刷题
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Peeking Iterator
Given an Iterator class interface with methods: next() and hasNext(), design and implement a PeekingIterator t
Personal Financial Manager
Explain how you would design a personal financial manager (like Mint.com).
Sales Rank
A large eCommerce company wishes to list the best-selling products, overall and by category.
Social Network
How would you design the data structures for a very large social network like Facebook or LinkedIn?