查找字符串中最长的连续元音集合

def find_longest_vowel_substring(s):
    vowels = set('aeiou')
    max_length = 0
    current_length = 0
    start_index = 0
    max_start_index = 0

    for i, char in enumerate(s):
        if char in vowels:
            current_length += 1
            if current_length > max_length:
                max_length = current_length
                max_start_index = start_index
        else:
            current_length = 0
            start_index = i + 1

    return s[max_start_index:max_start_index + max_length]

# 测试
test_string = "leetcodeisacommunityforcoders"
result = find_longest_vowel_substring(test_string)
print("最长的连续元音集合是:", result)