lanqiao huiwen separate

public class Main {
	
	public static void main(String[] args) {
		
		
		        for (int i = 1000; i <= 9999; i++) {
		            int a = i/1000;
		            int b = i%1000/100;
		            int c = i%100/10;
		            int d = i%10;
		            if(a == d && b == c){
		                System.out.println(i);
		            }
		   
		}

		
		
	}
	
	
	


}