class Solution {
public:
int dayOfYear(string date) {
}
};
1154. 一年中的第几天
给你一个字符串 date ，按 YYYY-MM-DD 格式表示一个 现行公元纪年法 日期。返回该日期是当年的第几天。
示例 1：
输入：date = "2019-01-09" 输出：9 解释：给定日期是2019年的第九天。
示例 2：
输入：date = "2019-02-10" 输出：41
提示：
date.length == 10date[4] == date[7] == '-'，其他的 date[i] 都是数字date 表示的范围从 1900 年 1 月 1 日至 2019 年 12 月 31 日原站题解
python3 解法, 执行用时: 112 ms, 内存消耗: 17.1 MB, 提交时间: 2023-12-31 09:56:33
class Solution:
def dayOfYear(self, date: str) -> int:
return datetime.datetime.strptime(date, "%Y-%m-%d").timetuple().tm_yday
java 解法, 执行用时: 26 ms, 内存消耗: 45 MB, 提交时间: 2023-12-31 09:55:57
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
class Solution {
private static final DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
public int dayOfYear(String date) {
return LocalDate.parse(date, formatter).getDayOfYear();
}
}
cpp 解法, 执行用时: 24 ms, 内存消耗: 6.2 MB, 提交时间: 2023-12-31 09:55:31
class Solution {
public:
int dayOfYear(string date) {
tm dt;
istringstream(date) >> get_time(&dt, "%Y-%m-%d");
return dt.tm_yday + 1;
}
};
javascript 解法, 执行用时: 164 ms, 内存消耗: 57 MB, 提交时间: 2023-12-31 09:55:08
/**
* @param {string} date
* @return {number}
*/
var dayOfYear = function(date) {
const d = new Date(date);
return (d - new Date(d.getFullYear(), 0, 0)) / 86400000;
};
rust 解法, 执行用时: 4 ms, 内存消耗: 2 MB, 提交时间: 2023-09-15 14:57:59
impl Solution {
pub fn day_of_year(date: String) -> i32 {
const DAYS: &[i32] = &[0, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334];
let date = date.split('-').map(|x| x.parse::<i32>().unwrap()).collect::<Vec<_>>();
let leap = date[0] % 4 == 0 && date[0] % 100 != 0 || date[0] % 400 == 0;
DAYS[date[1] as usize] + date[2] + if date[1] > 2 && leap { 1 } else { 0 }
}
pub fn day_of_year2(date: String) -> i32 {
let ymd = date.split('-').map(|x| x.parse::<i32>().unwrap()).collect::<Vec<i32>>();
let mut days = ymd[2];
for i in 1..ymd[1] {
match i {
1 | 3 | 5 | 7 | 8 | 10 | 12 => days += 31,
2 => days += if ymd[0] % 400 == 0 || (ymd[0] % 4 == 0 && ymd[0] % 100 != 0) { 29 } else { 28 },
_ => days += 30,
}
}
days
}
}
python3 解法, 执行用时: 192 ms, 内存消耗: 16.1 MB, 提交时间: 2023-09-15 14:56:01
from datetime import datetime
class Solution:
def dayOfYear(self, date: str) -> int:
return int(datetime.strptime(date, '%Y-%m-%d').strftime("%j"))
cpp 解法, 执行用时: 4 ms, 内存消耗: 6.2 MB, 提交时间: 2023-09-15 14:55:13
class Solution {
public:
int dayOfYear(string date) {
tm t;
strptime(date.c_str(), "%Y-%m-%d", &t);
return t.tm_yday + 1;
}
int dayOfYear2(string date) {
tm t{};
//strptime(date.c_str(), "%Y-%m-%d", &t);
istringstream ss(date);
ss >> get_time(&t, "%Y-%m-%d");
mktime(&t);
return t.tm_yday + 1;
}
};
cpp 解法, 执行用时: 16 ms, 内存消耗: 6.2 MB, 提交时间: 2023-09-15 14:53:43
class Solution {
public:
int dayOfYear(string date) {
int year = stoi(date.substr(0, 4));
int month = stoi(date.substr(5, 2));
int day = stoi(date.substr(8, 2));
int amount[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
if (year % 400 == 0 || (year % 4 == 0 && year % 100 != 0)) {
++amount[1];
}
int ans = 0;
for (int i = 0; i < month - 1; ++i) {
ans += amount[i];
}
return ans + day;
}
};
java 解法, 执行用时: 9 ms, 内存消耗: 43.2 MB, 提交时间: 2023-09-15 14:53:02
class Solution {
public int dayOfYear(String date) {
int year = Integer.parseInt(date.substring(0, 4));
int month = Integer.parseInt(date.substring(5, 7));
int day = Integer.parseInt(date.substring(8));
int[] amount = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
if (year % 400 == 0 || (year % 4 == 0 && year % 100 != 0)) {
++amount[1];
}
int ans = 0;
for (int i = 0; i < month - 1; ++i) {
ans += amount[i];
}
return ans + day;
}
}
javascript 解法, 执行用时: 148 ms, 内存消耗: 49.3 MB, 提交时间: 2023-09-15 14:52:47
/**
* @param {string} date
* @return {number}
*/
var dayOfYear = function(date) {
const year = +date.slice(0, 4);
const month = +date.slice(5, 7);
const day = +date.slice(8);
const amount = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
if (year % 400 === 0 || (year % 4 === 0 && year % 100 !== 0)) {
++amount[1];
}
let ans = 0;
for (let i = 0; i < month - 1; ++i) {
ans += amount[i];
}
return ans + day;
};
golang 解法, 执行用时: 16 ms, 内存消耗: 4.2 MB, 提交时间: 2023-09-15 14:52:33
func dayOfYear(date string) int {
year, _ := strconv.Atoi(date[:4])
month, _ := strconv.Atoi(date[5:7])
day, _ := strconv.Atoi(date[8:])
days := []int{31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}
if year%400 == 0 || (year%4 == 0 && year%100 != 0) {
days[1]++
}
ans := day
for _, d := range days[:month-1] {
ans += d
}
return ans
}
python3 解法, 执行用时: 60 ms, 内存消耗: 16.1 MB, 提交时间: 2023-09-15 14:52:11
class Solution:
def dayOfYear(self, date: str) -> int:
year, month, day = [int(x) for x in date.split("-")]
amount = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
if year % 400 == 0 or (year % 4 == 0 and year % 100 != 0):
amount[1] += 1
ans = sum(amount[:month - 1])
return ans + day
php 解法, 执行用时: 44 ms, 内存消耗: 18.8 MB, 提交时间: 2022-08-10 15:58:46
class Solution {
/**
* @param String $date
* @return Integer
*/
function dayOfYear($date) {
$year = substr($date, 0, 4);
return (strtotime($date) - strtotime("{$year}-01-01") ) / 86400 + 1;
}
}
golang 解法, 执行用时: 24 ms, 内存消耗: 5.1 MB, 提交时间: 2021-06-25 14:51:31
func dayOfYear(date string) int {
t, _ := time.Parse("2006-01-02", date)
return t.YearDay()
}