归档 2016年10月18日

[LeetCode]All O`one Data Structure

题目描述:

LeetCode 432. All O`one Data Structure

Implement a data structure supporting the following operations:

  1. Inc(Key) - Inserts a new key with value 1. Or increments an existing key by 1. Key is guaranteed to be a non-empty string.
  2. Dec(Key) ...

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