Leetcode 387 First Unique Character in a String
Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Examples: Note: You may ...
原文：[LeetCode] 1429. First Unique Number
You have a queue of integers, you need to retrieve the first unique integer in the queue. Implement theFirstUniqueclass: FirstUnique int nums Initializes the object with the numbers in the queue. int ...
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