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 o…

题目: 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 th…

551. Student Attendance Record I[easy] 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 attend…

problem 551. Student Attendance Record I 题意: solution: class Solution { public: bool checkRecord(string s) { ; ; for(auto ch:s) { if('A'==ch) { ) return false;// cntL = ;// } else if('L' == ch) { ) return false;// } ;// } return true; } }; 理解题意很简单,重要…

Given a positive integer n, return the number of all possible attendance records with length n, which will be regarded as rewardable. The answer may be very large, return it after mod 109 + 7. A student attendance record is a string that only contain…

［抄题］: 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…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 正则表达式 统计 日期 题目地址:https://leetcode.com/problems/student-attendance-record-i/#/description 题目描述 You are given a string representing an attendance record for a student. The record…

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 o…

▶ 一个学生的考勤状况是一个字符串,其中各字符的含义是:A 缺勤,L 迟到,P 正常.如果一个学生考勤状况中 A 不超过一个,且没有连续两个 L(L 可以有多个,但是不能连续),则称该学生达标(原文表述:A student could be rewarded if his attendance record doesn't contain more than one 'A' (absent) or more than two continuous 'L' (late). ) ▶ 551. 给定一…

1.题目描述 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…