电面: dp 麦当劳买鸡块问题,比较简单
Recursion 类似subset
(1) Given an array of integers, return the result after calculate square
of each element(don’t worry overflow): eg [1,2,3] => [1,4,9]
(2) System Design yahoo news
(3) 给一个matrix和字典,matrix每一个cell是一个字母;从matrix里面找到所有
的字典里的单词返回
(4) OOP 餐厅等位系统
(5) Behavior question + background + deep copy of a graph
(6) TRIE + lots of related questions
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