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.
Example 2:
Input: date = "2019-02-10" Output: 41
Constraints:
date.length == 10date[4] == date[7] == '-', and all other date[i]'s are digitsdate represents a calendar date between Jan 1st, 1900 and Dec 31st, 2019.Solutions for this problem are being prepared.
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