Solution 1 - Count Absences + Late Streak

Invalid if absences ≥ 2 or there is any "LLL" substring.

TimeComplexity: O(n)

SpaceComplexity: O(1)

""" 0551.1 - Student Attendance Record I - Solution 1 - Count Absences + Late Streak """

class Solution:
    def checkRecord(self, s: str) -> bool:
        return s.count("A") < 2 and "LLL" not in s

if __name__ == "__main__":
    print(Solution().checkRecord("PPALLP"))

0551 - Student Attendance Record I

Solution 1 - Count Absences + Late Streak