Inverted Half Pyramid with Numbers

public class format {
    
    public static void main() {
        System.out.println("Inverted Half Pyramid With Numbers");
        for(int i=a;i>=1;i--){
            for(int j=1;j<=i;j++){
                System.out.print(j+" ");
            }
            System.out.println();
        }
    }
}