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➤微信公众号:山青咏芝(shanqingyongzhi)
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Given a year Y
and a month M
, return how many days there are in that month.
Example 1:
Input: Y = 1992, M = 7
Output: 31
Example 2:
Input: Y = 2000, M = 2
Output: 29
Example 3:
Input: Y = 1900, M = 2
Output: 28
Note:
1583 <= Y <= 2100
1 <= M <= 12
指定年份 Y
和月份 M
,请你帮忙计算出该月一共有多少天。
示例 1:
输入:Y = 1992, M = 7 输出:31
示例 2:
输入:Y = 2000, M = 2 输出:29
示例 3:
输入:Y = 1900, M = 2 输出:28
提示:
1583 <= Y <= 2100
1 <= M <= 12
4ms
1 class Solution { 2 func numberOfDays(_ Y: Int, _ M: Int) -> Int { 3 if Y % 400 == 0 || (Y % 100 != 0 && Y % 4 == 0) 4 { 5 if M == 2 {return 29} 6 } 7 let mon:[Int] = [31,28,31,30,31,30,31,31,30,31,30,31] 8 return mon[M - 1] 9 } 10 }