Solution: First Unique Character in a String
Let's solve the First Unique Character in a String problem using the Knowing What to Track pattern.
We'll cover the following
Statement
For a given string of characters, s
, your task is to find the first non-repeating character and return its index. Return if there’s no unique character in the given string.
Constraints:
- Only lowercase english letters are accepted.
- There are no spaces in the string.
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