java基础—几种for循环编程思想

几种for循环编程思想

public class TextDemos1 
{

	public static void main(String[] args) 
	{
		// TODO Auto-generated method stub

		med7();
	}

	private static void med7() {
		// TODO Auto-generated method stub
		for(int i=0;i<=8;i++)
		{
			for(int j =0;j<i;j++)
			{
				System.out.print(" ");
			}
			
			for(int j=8;j>=i;j--)
			{
				System.out.print("* ");
				
			}
			System.out.println();
			
		}
		
		
		/*
		 
* * * * * * * * * 
 * * * * * * * * 
  * * * * * * * 
   * * * * * * 
    * * * * * 
     * * * * 
      * * * 
       * * 
        * 
       
        
		 * */
	}

	private static void med6() {
		// 输出九九乘法表
		for(int i =1;i<=9;i++)
		{
			for(int j =1;j<=i;j++)
			{
				System.out.print(j+" * "+i+" = "+i*j+"  ");
			}
			System.out.println();
		}
		/*
1 * 1 = 1  
1 * 2 = 2  2 * 2 = 4  
1 * 3 = 3  2 * 3 = 6  3 * 3 = 9  
1 * 4 = 4  2 * 4 = 8  3 * 4 = 12  4 * 4 = 16  
1 * 5 = 5  2 * 5 = 10  3 * 5 = 15  4 * 5 = 20  5 * 5 = 25  
1 * 6 = 6  2 * 6 = 12  3 * 6 = 18  4 * 6 = 24  5 * 6 = 30  6 * 6 = 36  
1 * 7 = 7  2 * 7 = 14  3 * 7 = 21  4 * 7 = 28  5 * 7 = 35  6 * 7 = 42  7 * 7 = 49  
1 * 8 = 8  2 * 8 = 16  3 * 8 = 24  4 * 8 = 32  5 * 8 = 40  6 * 8 = 48  7 * 8 = 56  8 * 8 = 64  
1 * 9 = 9  2 * 9 = 18  3 * 9 = 27  4 * 9 = 36  5 * 9 = 45  6 * 9 = 54  7 * 9 = 63  8 * 9 = 72  9 * 9 = 81  


		 * */
		
	}

	private static void med5() 
	{
		// TODO Auto-generated method stub
		for(int i =0;i<=6;i++)
		{
			for(int j =0;j<i;j++)
			{
				System.out.print(i);
			}
			System.out.println();
		}
		/*

1
22
333
4444
55555
666666 
		 **/
	}

	private static void med4() 
	{
		// TODO Auto-generated method stub
		for(int i =0;i<=6;i++)
		{
			for(int j =6;j>i;j--)
			{
				System.out.print(j);
			}
			System.out.println();
		}
		/*
654321
65432
6543
654
65
6		
		 * */
	}

	private static void med3() {
		// TODO Auto-generated method stub
		for(int i =0;i<=6;i++)
		{
			for(int j =6-i;j>0;j--)
			{
				System.out.print(j);
			}
			System.out.println();
		}
		/*
654321
54321
4321
321
21
1
		 **/
	}

	private static void med2() {
		// TODO Auto-generated method stub
		for(int i =0;i<=10;i++)
		{
			for(int j =0;j<=i;j++)
			{
				System.out.print("*");
			}
			System.out.println();
		}
		/**
* 
**
***
****
*****
******
*******
********
*********
**********
***********
*/
	}

	private static void med1() 
	{
		// 
		for(int i =0;i<=10;i++)
		{
			for(int j =0;j<=10-i;j++)
			{
				System.out.print("*");
			}
			System.out.println();
		}
	}
	/*
***********
**********
*********
********
*******
******
*****
****
***
**
*
*/

}