import re


def is_camel_case(s: str) -> bool:
    """
    Determines whether a string is written in camel case

    Args:
        s: The string to check
    Returns:
        True if the string is camel case, False otherwise
    """
    pattern = '([A-Z][a-z]*)+'
    if re.search(pattern, s):
        return True
    return False