计算日期到天数转换

import java.util.Scanner;public class CountDays {public static void main(String[] args) {Scanner scan = new Scanner(System.in);int year = scan.nextInt();int month = scan.nextInt();int day = scan.nextInt();int []a = {31,28,31,30,31,30,31,31,30,31,30,31};int []b = {31,29,31,30,31,30,31,31,30,31,30,31};if(year % 4 == 0 && year % 100 != 0 || year % 400 == 0)countDays(b,month,day);elsecountDays(a, month, day);}private static void countDays(int[] arr, int month, int day) {int sum = 0;for (int i = 0; i < month-1; i++) {sum += arr[i];}sum += day;System.out.println(sum);}}