原文链接: https://leetcode-cn.com/problems/day-of-the-week

英文原文

Given a date, return the corresponding day of the week for that date.

The input is given as three integers representing the day, month and year respectively.

Return the answer as one of the following values {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"}.

 

Example 1:

Input: day = 31, month = 8, year = 2019
Output: "Saturday"

Example 2:

Input: day = 18, month = 7, year = 1999
Output: "Sunday"

Example 3:

Input: day = 15, month = 8, year = 1993
Output: "Sunday"

 

Constraints:

• The given dates are valid dates between the years 1971 and 2100.

中文题目

给你一个日期，请你设计一个算法来判断它是对应一周中的哪一天。

输入为三个整数：day、month 和 year，分别表示日、月、年。

您返回的结果必须是这几个值中的一个 {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"}。

 

示例 1：

输入：day = 31, month = 8, year = 2019
输出："Saturday"

示例 2：

输入：day = 18, month = 7, year = 1999
输出："Sunday"

示例 3：

输入：day = 15, month = 8, year = 1993
输出："Sunday"

 

提示：

• 给出的日期一定是在 1971 到 2100 年之间的有效日期。

通过代码

高赞题解

class Solution {
public:
    string dayOfTheWeek(int day, int month, int year) {
        if(month==1||month==2) month+=12,year--;
	int iWeek = (day+2*month+3*(month+1)/5+year+year/4-year/100+year/400)%7;                              //基姆拉尔森计算公式
       string result[]= { "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday","Sunday"};
	return result[iWeek];
    }
};

统计信息

通过次数	提交次数	AC比率
11859	19694	60.2%

提交历史

提交时间	提交结果	执行时间	内存消耗	语言