题解 | 获得月份天数

感觉这样简单一点：

public class Main{
    public static void main(String[] args){
        Scanner in = new Scanner (System.in);
        int []a={31,28,31,30,31,30,31,31,30,31,30,31};
        while(in.hasNextInt()){
            int year = in.nextInt();
            int month= in.nextInt();
            if(year%4==0&&year/100!=0||year/400==0){
                if(month==2){
                    System.out.println((a[1]+1));
                    
                } else System.out.println(a[month-1]);
            }else 
            System.out.println(a[month-1]);
        }
        }
}