Leetcode: Two Sum III - Data structure design
The trade off should be considered: In fact, there has to be one operation's time complexity ...
原文：[LeetCode] 170. Two Sum III - Data structure design 兩數之和之三 - 數據結構設計
Design and implement a TwoSum class. It should support the following operations:addandfind. add Add the number to an internal data structure.find Find if there exists any pair of numbers which sum is ...
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