Oracle Quick Start (PLSQL Programming) Oracle uses PLSQL programming, output diamond

Oracle uses PLSQL programming, output diamond

declare 
     m number := 3;
begin
     
     for y in -m..m loop 
     
         for x in -m..m loop
           
             if abs(y) + abs(x) <= m then                       
                dbms_output.put('*');
             else    
                 dbms_output.put(' ');
             end if;
             
         end loop;       
         dbms_output.new_line();
     end loop;
end;