Leetcode 551. Student Attendance Record I--判断是否奖励： A出现次数大于1返回false；L连续出现次数大于2返回false,中间隔断时从0开始计数

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

  A出现次数大于1返回false(可不连续) ；L连续出现次数大于2返回false,中间隔断时从0开始计数

package com.string;


/**
 * Title:
 * A出现次数大于1返回false(可不连续)
 * L连续出现次数大于2返回false,中间隔断时从0开始计数
 *
 * @Author 
 * @CreateTime 2019/6/26 17:21
 */
public class Leetcode_551StudentAttendanceRecordI {

    /**
     * A出现次数大于1返回false(可不连续)
     * L连续出现次数大于2返回false,中间隔断时从0开始计数
     * Runtime: 0 ms, faster than 100.00% of Java online submissions for Student Attendance Record I.
     * Memory Usage: 34.4 MB, less than 100.00% of Java online submissions for Student Attendance Record I.
     *
     * @param s
     * @return
     */
    public boolean checkRecord(String s) {
        int aCount = 0;
        int lCount = 0;
        for (int i = 0; i < s.length(); i++) {
            if (s.charAt(i) == 'A') {
                aCount++;
                lCount = 0;
                if (aCount > 1) {
                    return false;
                }
            } else if (s.charAt(i) == 'L') {
                lCount++;
                if (lCount > 2) {
                    return false;
                }
            } else {
                lCount = 0;
            }
        }//for
        return true;
    }

    public static void main(String[] args) {
        Leetcode_551StudentAttendanceRecordI object = new Leetcode_551StudentAttendanceRecordI();
        System.out.println(object.checkRecord("PPALLP"));//true
        System.out.println(object.checkRecord("PPALLL"));//false
        System.out.println(object.checkRecord("LALL"));//true
    }
}