StudentAttendanceRecordI.java

package string;

/**
 * Created by gouthamvidyapradhan on 10/05/2019 You are given a string representing an attendance
 * record for a student. The record only contains the following three characters: 'A' : Absent. 'L'
 * : Late. '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).
 *
 * <p>You need to return whether the student could be rewarded according to his attendance record.
 *
 * <p>Example 1: Input: "PPALLP" Output: True Example 2: Input: "PPALLL" Output: False
 *
 * Solution O(N) Simple linear check
 */
public class StudentAttendanceRecordI {
  public static void main(String[] args) {
  }

    public boolean checkRecord(String s) {
        int count = 0;
        for(int c : s.toCharArray()){
            if(c == 'A'){
                count++;
            }
            if(count > 1) return false;
        }
        if(s.contains("LLL")) return false;
        return true;
    }

}