### 1154 Day Of The Year

```/**
*
* Ashish Patel
* e: ashishsushilPatel@gmail.com
* w: https://ashish.me
*
*/

/*
* Given a string date representing a Gregorian calendar date
* formatted as YYYY-MM-DD, return the day number of the year.
*
* Example 1:
*
* Input: date = "2019-01-09"
* Output: 9
* Explanation: Given date is the 9th day of the year in 2019.
*/

function dayOfTheYear(date) {
const map = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
const year = date.split('-')[0]
const month = date.split('-')[1]
const day = Number(date.split('-')[2])
let res = day

for (let index = 0; index < Number(month) - 1; index++) {
res += map[index]
}

if (month > 2) {
if (year % 400 === 0) {
return res + 1
}
if (year % 100 === 0) {
return res
}
if (year % 4 === 0) {
return res + 1
}
}
return res
}

test('day Of The Year', () => {
expect(dayOfTheYear('2019-01-09')).toEqual(9)
expect(dayOfTheYear('2019-02-10')).toEqual(41)
expect(dayOfTheYear('2003-03-01')).toEqual(60)
expect(dayOfTheYear('2004-03-01')).toEqual(61)
})```

Created 2020-04-18T22:55:23+00:00 · Edit