LeetCode contest 177 5169. 日期之间隔几天 Number of Days Between Two Dates

Table of Contents

中文版：

请你编写一个程序来计算两个日期之间隔了多少天。

日期以字符串形式给出，格式为 YYYY-MM-DD，如示例所示。

示例 1：

输入：date1 = "2019-06-29", date2 = "2019-06-30"
输出：1

示例 2：

输入：date1 = "2020-01-15", date2 = "2019-12-31"
输出：15

提示：

给定的日期是 1971 年到 2100 年之间的有效日期。

英文版：

Write a program to count the number of days between two dates.

The two dates are given as strings, their format is YYYY-MM-DD as shown in the examples.

Example 1:

Input: date1 = "2019-06-29", date2 = "2019-06-30"
Output: 1

Example 2:

Input: date1 = "2020-01-15", date2 = "2019-12-31"
Output: 15

Constraints:

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

My answer:

import time

class Solution:
    def daysBetweenDates(self, date1: str, date2: str) -> int:
        time1 = time.mktime(time.strptime(date1,'%Y-%m-%d'))
        time2 = time.mktime(time.strptime(date2,'%Y-%m-%d'))
        result = abs(int((time2 - time1)/(24*60*60)))
        return result

看到题解的另一种方法：

from datetime import datetime 
class Solution:
    def daysBetweenDates(self, date1: str, date2: str) -> int:
        date1 = datetime.strptime(date1,'%Y-%m-%d')
        date2 = datetime.strptime(date2,'%Y-%m-%d')
        res = abs((date1 - date2).days)
        return res

作者：z1m
链接：https://leetcode-cn.com/problems/number-of-days-between-two-dates/solution/pythonshi-yong-ku-by-z1m/
来源：力扣（LeetCode）
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