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CodingBat code practice

 

mostPopularVowel


Return the most popular vowel (aeiou) in a lowercase String. The String will have one vowel most popular.


mostPopularVowel("mississipi") → "i"
mostPopularVowel("farewell") → "e"
mostPopularVowel("repeated") → "e"

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public String mostPopularVowel(String str) { }

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