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Grokking the Coding Interview Patterns in Go

Find the Longest Substring Having Vowels in Even Counts

Explore how to identify the longest substring in a string where each vowel occurs an even number of times. This lesson teaches you to apply bitwise manipulation to efficiently solve this problem while strengthening your understanding of substring processing and character counting.

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Statement

Given the string s, return the length of the longest substringA substring is a consecutive sequence of characters within a string. in which each vowel—a, e, i, o, and u—appears an even number of times.

Constraints:

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