[LC] 3280 Convert Date to Binary

Java

/**
 * <a href="https://leetcode.cn/problems/convert-date-to-binary/">Convert Date To Binary</a>
 * 数学；字符串
 */
class Solution {
    public String convertDateToBinary(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, 10));

        StringBuilder sb = new StringBuilder();
        sb.append(Integer.toBinaryString(year));
        sb.append("-");
        sb.append(Integer.toBinaryString(month));
        sb.append("-");
        sb.append(Integer.toBinaryString(day));

        return sb.toString();
    }
}