3280.convert-date-to-binary.py

#  Tag: Math, String
#  Time: O(1)
#  Space: O(1)
#  Ref: -
#  Note: -

#  You are given a string date representing a Gregorian calendar date in the yyyy-mm-dd format.
#  date can be written in its binary representation obtained by converting year, month, and day to their binary representations without any leading zeroes and writing them down in year-month-day format.
#  Return the binary representation of date.
#   
#  Example 1:
#  
#  Input: date = "2080-02-29"
#  Output: "100000100000-10-11101"
#  Explanation:
#  100000100000, 10, and 11101 are the binary representations of 2080, 02, and 29 respectively.
#  
#  Example 2:
#  
#  Input: date = "1900-01-01"
#  Output: "11101101100-1-1"
#  Explanation:
#  11101101100, 1, and 1 are the binary representations of 1900, 1, and 1 respectively.
#  
#   
#  Constraints:
#  
#  date.length == 10
#  date[4] == date[7] == '-', and all other date[i]'s are digits.
#  The input is generated such that date represents a valid Gregorian calendar date between Jan 1st, 1900 and Dec 31st, 2100 (both inclusive).
#  
#  

class Solution:
    def convertDateToBinary(self, date: str) -> str:
        return "-".join([self.convert(num) for num in date.split('-')])

    def convert(self, number: str) -> str:
        number = int(number)
        res = ''
        while number > 0:
            res = str(number & 1) + res
            number = number >> 1

        return res