First Unique Character in a String - LeetCode May 5 Challenge

387. First Unique Character in a String - LeetCode
In this video:
- first solution that counts the frequency of characters, then rescans the string for the first unique
- second solution that avoids rescanning by mapping character directly to the unique index
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Try it yourself here
https://leetcode.com/problems/first-unique-character-in-a-string/

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Видео First Unique Character in a String - LeetCode May 5 Challenge канала daose