1.8

    //画菱形
        for(int hs=0; hs<10; hs++)
        {
            for(int a=hs;a<10; a++ ){
                System.out.print(" ");

            }
            for ( int ls=1; ls<=hs ; ls++)
            {    
                System.out.print("* ");
                


            }
        
            
            System.out.println();
        }
            
            for(int hs1=10; hs1>0; hs1--)
            {
                for(int b=hs1; b<10; b++  ){
                    
                    System.out.print(" ");}

                for ( int ls=1; ls<=hs1 ; ls++)
                {    
                    System.out.print("* ");

                }
            
                
                System.out.println();

            
            
            
            }    
            
            
            
        }
        
        
        
        
        
        
        
        
        
        
        
        
    

for(int hs=1;hs<11; hs++)
    {
        
        for(int kg=9; kg >=hs; kg--)
        {
            System.out.print(" ");
        }
        for ( int ds=1; ds<=hs; ds++)
        {
            System.out.print("* ");
        }
        System.out.println();
    }
        
        for (int hs1=9; hs1>0; hs1--)
    
        {
            
            for(int kg=9; kg >=hs1; kg--)
            {
                System.out.print(" ");
            }
            for ( int ds=1; ds<=hs1; ds++)
            {
                System.out.print("* ");
            }
            System.out.println();
        }
        
        
        
    }