attendance.js

/*

You are given a string representing an attendance record for a student. 
The record only contains the following three characters:

1. 'A' : Absent.
2. 'L' : Late.
3. 'P' : Present.

A student could be rewarded if his attendance record doesn't contain 
more than one 'A' (absent) or more than two continuous 'L' (late).

You need to return whether the student could be rewarded according to his attendance record.

Example 1:

Input: "PPALLP"
Output: True

Example 2:

Input: "PPALLL"
Output: False

*/

/**
 *
 * @param {string} attendance
 * @returns {boolean}
 */
const rewardStudent = (attendance) => {
  let shouldReward = true;

  let attendanceMatches = attendance.match(/a/gi);

  if (attendanceMatches !== null && attendanceMatches.length > 1)
    shouldReward = false;
  else if (/LLL+/i.test(attendance)) shouldReward = false;

  return shouldReward;
};

rewardStudent("PPALL"); // true
rewardStudent("PAAL"); // false