How to Solve Longest Substring Of All Vowels in Order Problem
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Longest Substring Of All Vowels in Order
A string is considered beautiful if it satisfies the following conditions: Each of the 5 English vowels ('a', 'e', 'i', 'o', 'u') must appear at least once in it. The letters must be sorted in alphabe...
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Understanding the Longest Substring Of All Vowels in Order Problem
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Problem Statement
A string is considered beautiful if it satisfies the following conditions: Each of the 5 English vowels ('a', 'e', 'i', 'o', 'u') must appear at least once in it. The letters must be sorted in alphabetical order (i.e. all 'a's before 'e's, all 'e's before 'i's, etc.). For example, strings "aeiou" and "aaaaaaeiiiioou" are considered beautiful, but "uaeio", "aeoiu", and "aaaeeeooo" are not beautiful. Given a string word consisting of English vowels, return the length of the longest beautiful substring of word. If no such substring exists, return 0. A substring is a contiguous sequence of characters in a string.
Longest Substring Of All Vowels in Order
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Examples
word = "aeiaaioaaaaeiiiiouuuooaauuaeiu"13The longest beautiful substring in word is "aaaaeiiiiouuu" of length 13.
word = "aeeeiiiioooauuuaeiou"5The longest beautiful substring in word is "aeiou" of length 5.
word = "a"0There is no beautiful substring, so return 0.
Constraints
1 <= word.length <= 5 * 105word consists of characters 'a', 'e', 'i', 'o', and 'u'.How Interview Coder Helps with Leetcode Problems
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