WordFlow Detector (ChatGPT)

public class WordFlowDetector
{
    private HashSet<char> vowels = new HashSet<char> { 'a', 'e', 'i', 'o', 'u', 'y' };
    private HashSet<char> consonants = new HashSet<char> { 'b', 'c', 'd', 'f', 'g', 'h', 'j', 'k', 'l', 'm', 'n', 'p', 'q', 'r', 's', 't', 'v', 'w', 'x', 'z' };

    public bool IsWellFlowed(string word)
    {
        word = word.ToLower();
        List<string> syllables = SplitIntoSyllables(word);
        bool isVowelStart = false;

        foreach (string syllable in syllables)
        {
            bool isSyllableWellFlowed = IsSyllableWellFlowed(syllable, isVowelStart);
            if (!isSyllableWellFlowed)
                return false;

            isVowelStart = !isVowelStart;
        }

        return true;
    }

    private List<string> SplitIntoSyllables(string word)
    {
        List<string> syllables = new List<string>();
        string currentSyllable = "";

        for (int i = 0; i < word.Length; i++)
        {
            char currentChar = word[i];
            currentSyllable += currentChar;

            if (i == word.Length - 1 || IsVowel(currentChar) != IsVowel(word[i + 1]))
            {
                syllables.Add(currentSyllable);
                currentSyllable = "";
            }
        }

        return syllables;
    }

    private bool IsSyllableWellFlowed(string syllable, bool isVowelStart)
    {
        char startChar = isVowelStart ? 'v' : 'c';

        foreach (char c in syllable)
        {
            if ((IsVowel(c) && startChar != 'v') || (!IsVowel(c) && startChar != 'c'))
                return false;

            startChar = (startChar == 'v') ? 'c' : 'v';
        }

        return true;
    }

    private bool IsVowel(char c)
    {
        return vowels.Contains(c);
    }
}