用于循环数字图案打印

package forloop;

public class pattern {

    public static void main(string[] args)
    {
        pattern();
        pattern1();
        pattern2();
        pattern3();
        pattern4();
        pattern5();
        pattern6();

    }

    private static void pattern6()
    {
        for (int line=1;line<=9;line++)
        {
            for(int col=1;col<=9;col++)
            {
                if((line==9&&col<9)||(line==5&&col<9)||(line==1&&col>1))
                    system.out.print("* ");
                else if(col==1&&line>1)
                    system.out.print("* ");
                else if((line==6||line==7||line==8)&&col==9)
                    system.out.print("* ");
                else
                    system.out.print("  ");
            }
         system.out.println();
        }   

    }

    private static void pattern5() 
    {
        for (int line=1;line<=9;line++)
        {
            for(int col=1;col<=9;col++)
            {
                if((line==9&&col<9)||(line==5&&col<9)||(line==1&&col>1))
                    system.out.print("* ");
                else if((line==2||line==3||line==4)&&col==1)
                    system.out.print("* ");
                else if((line==6||line==7||line==8)&&col==9)
                    system.out.print("* ");
                else
                    system.out.print("  ");
            }
         system.out.println();
        }   

    }

    private static void pattern4() 
    {
        for (int line=1;line<=9;line++)
        {
            for(int col=1;col<=9;col++)
            {
                if((line==5&&col<8)||col==5||col+line==6)
                    system.out.print("* ");
                else
                    system.out.print("  ");
            }
         system.out.println();
        }


    }

    private static void pattern3() 
    {
        for (int line=1;line<=9;line++)
        {
            for(int col=1;col<=9;col++)
            {
                if(line==9||line==1||(line==5)||col==9)
                    system.out.print("* ");

                else
                    system.out.print("  ");
            }
          system.out.println(); 
        }

    }

    private static void pattern2()
    {
        for (int line=1;line<=9;line++)
        {
            for(int col=1;col<=9;col++)
            {
                if((line==9&&col>1)||(line==5&&col>1)||(line==1&&col<9))
                    system.out.print("* ");
                else if((line==2||line==3||line==4)&&col==9)
                    system.out.print("* ");
                else if((line==6||line==7||line==8)&&col==1)
                    system.out.print("* ");
                else
                    system.out.print("  ");
            }
         system.out.println();
        }

    }

    private static void pattern1() 
    {
        for (int line=1;line<=9;line++)
        {
            for(int col=1;col<=9;col++)
            {
                if(line==9||col==5||col+line==6)
                    system.out.print("* ");
                else
                    system.out.print("  ");
            }
         system.out.println();
        }

    }

    private static void pattern() 
    {

        for (int line=1; line<=10;line++)
        {
            for(int col=1; col<=10; col++) {
              system.out.print("*  ");  
            }

            system.out.println("  "); 
        }


    }
}

*  *  *  *  *  *  *  *  *  *    
*  *  *  *  *  *  *  *  *  *    
*  *  *  *  *  *  *  *  *  *    
*  *  *  *  *  *  *  *  *  *    
*  *  *  *  *  *  *  *  *  *    
*  *  *  *  *  *  *  *  *  *    
*  *  *  *  *  *  *  *  *  *    
*  *  *  *  *  *  *  *  *  *    
*  *  *  *  *  *  *  *  *  *    
*  *  *  *  *  *  *  *  *  * 

        *         
      * *         
    *   *         
  *     *         
*       *         
        *         
        *         
        *         
* * * * * * * * *

* * * * * * * *   
                * 
                * 
                * 
  * * * * * * * * 
*                 
*                 
*                 
  * * * * * * * * 

* * * * * * * * * 
                * 
                * 
                * 
* * * * * * * * * 
                * 
                * 
                * 
* * * * * * * * * 

        *         
      * *         
    *   *         
  *     *         
* * * * * * *     
        *         
        *         
        *         


  * * * * * * * * 
*                 
*                 
*                 
* * * * * * * *   
                * 
                * 
                * 
* * * * * * * * 

  * * * * * * * * 
*                 
*                 
*                 
* * * * * * * *   
*               * 
*               * 
*               * 
* * * * * * * *   

package forloop;

public class shape {

    public static void main(string[] args)
    {
        shape1();
        shape2();
        shape3();
        shape4();
    }
    private static void shape4()
    {
        for (int row = 5; row>=1;row--)
        {
          for(int col=1; col<=row; col++)
          {
             system.out.print(row+" ");
          }
        system.out.println();
    }   

    }
    private static void shape3()
    {
        for (int row=1; row<=5;row++)
        {
          for(int col=1; col<=row; col++)
          {
             system.out.print(col+" " );
          }
        system.out.println();
        }   

    }
    private static void shape2()
    {
        for (int row=1; row<=5;row++)
        {
          for(int col=1; col<=row; col++)
          {
             system.out.print("* ");
          }
        system.out.println();
        }

    }
    private static void shape1() 
    {   
      for (int row = 5; row>=1;row--)
        {
          for(int col=1; col<=row; col++)
          {
             system.out.print("* ");
          }
        system.out.println();
    }

    }
    }

* * * * * 
* * * * 
* * * 
* * 
* 

* 
* * 
* * * 
* * * * 
* * * * * 

1 
1 2 
1 2 3 
1 2 3 4 
1 2 3 4 5 

5 5 5 5 5 
4 4 4 4 
3 3 3 
2 2 
1