文章作者：Tyan
博客：noahsnail.com  |  CSDN  |  简书

1. Description

Student Attendance Record I

2. Solution

class Solution {
public:
    bool checkRecord(string s) {
        int absent = 0;
        int late = 0;
        for(int i = 0; i < s.length(); i++) {
            char ch = s[i];
            if(ch == 'A') {
                absent++;
                if(absent > 1) {
                    return false;
                }
            }
            if(ch == 'L') {
                if(i + 1 < s.length() && s[i + 1] == 'L') {
                    if(i + 2 < s.length() && s[i + 2] == 'L') {
                        return false;
                    }
                } 
            }
        }
        return true;
    }
};

Reference

1. https://leetcode.com/problems/student-attendance-record-i/description/