Description:​

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.

Video Explanation​

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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.

Steps:​

1. Date Input: Given a date in the format YYYY-MM-DD.

2. Binary Conversion:

• Convert the year (YYYY) to binary. • Convert the month (MM) to binary. • Convert the day (DD) to binary.

3. Output: Provide the combined binary representation.

Solutions​

class Solution {
public:
    string convertDateToBinary(string date) {
        int year = stoi(date.substr(0, 4));
        int month = stoi(date.substr(5, 2));
        int day = stoi(date.substr(8, 2));
        
        auto toBin = [](int val) {
            string s = "";
            while (val > 0) {
                s = to_string(val % 2) + s;
                val /= 2;
            }
            return s;
        };
        
        return toBin(year) + "-" + toBin(month) + "-" + toBin(day);
    }
};

class Solution {
    public String convertDateToBinary(String date) {
        String[] parts = date.split("-");
        int year = Integer.parseInt(parts[0]);
        int month = Integer.parseInt(parts[1]);
        int day = Integer.parseInt(parts[2]);

        String yearBinary = Integer.toBinaryString(year);
        String monthBinary = Integer.toBinaryString(month);
        String dayBinary = Integer.toBinaryString(day);
        return yearBinary + "-" + monthBinary + "-" + dayBinary;
    }
}

class Solution:
    def convertDateToBinary(self, date: str) -> str:
        parts = date.split('-')
        return '-'.join(bin(int(p))[2:] for p in parts)

var convertDateToBinary = function(date) {
    return date.split('-').map(part => Number(part).toString(2)).join('-');
};