# 13.09.2025 [3541. Find Most Frequent Vowel and Consonant]

Max freq vowels + consonants #easy

13.09.2025

3541. Find Most Frequent Vowel and Consonant easy blog post substack youtube

https://dmitrysamoylenko.com/2023/07/14/leetcode_daily.html

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Problem TLDR

Max freq vowels + consonants #easy

Intuition

Make a frequency array, then find max of vowel and max of consonant.

Approach

• can we do a one-liner?

Complexity

• Time complexity: $$O(n)$$

• Space complexity: $$O(n)$$

Code

// 27ms
    fun maxFreqSum(s: String) = s.partition { it in "aeiou" }.toList()
        .sumOf { it.groupBy { it }.maxOfOrNull { it.value.size } ?: 0 }