题目

public class Main {
	static int[] date = new int[] {0,31,28,31,30,31,30,31,31,30,31,30,31};
	public static boolean res(StringBuffer s) {
		String ss = s.toString();
		//yyrr
		for(int i=0;i<2;i++) {
			int x = Integer.parseInt(s.charAt(i)+"");
			int y = Integer.parseInt(s.charAt(i+1)+"");
			int z = Integer.parseInt(s.charAt(i+2)+"");
			if((y-x == 1) && (z-y == 1)) {
				return true;
			}
		}
		return false;
	}
	public static void main(String[] args) {
		//2022xxyy
		//2022不是闰年
		
		StringBuffer s = new StringBuffer();
		int sum = 0;
		for(int i=1;i<=12;i++) {
			if(i<10) {
				s.append("0"+i);
			}else {
				s.append(i);
			}
			for(int j=1;j<=date[i];j++) {
				if(j<10) {
					s.append("0"+j);
				}else {
					s.append(j);
				}
				//组成四位yyrr
				if(res(s)) {
					sum++;
				}
				s.delete(2,s.length());
			}
			s.delete(0,s.length());
		}
		System.out.println(sum);
	}
}