一些for循環嵌套

package cn.imust.day01;

public class TestForCircle {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		//the general rectangle
				/*
					******
					******
					******
					******
					******
				*/
				for (int x=0;x<5 ;x++ )//control the external circle
				{
					for (int y=0;y<5 ;y++ )//control the internal circle
					{
						System.out.print("*");
					}
					System.out.println();//just acting as line feed
				}
				
				//the triangle like this
				/*
				 	*
				 	**
				 	***
				 	****
				 	*****
				*/
				for (int x=0;x<5 ;x++ )
				{
					for (int y=0;y<=x ;y++ )
					{
						System.out.print("*");
					}
					System.out.println();
				}
				
				//the triangle like this 
				/*
				 *****
				 ****
				 ***
				 **
				 *
				 */
				 for (int x=0;x<5 ;x++ )
				 {
					 for (int y=x;y<5 ;y++ )
					 {
						 System.out.print("*");
					 }
					 System.out.println();
				 }
				
				 /*
				  1
				  12
				  123
				  1234
				  12345
				   */
				 for (int x=1;x<6 ;x++ )
				 {
					 for (int y=1;y<=x ;y++ )
					 {
						System.out.print(y);
					 }
					 System.out.println();
				 }
	}

}