打印图形Test7

package java基础知识.数组和常用算法;

public class 打印图形Test7 {

	/**
	 * @param 打印图形
      * 
    * * * 
  * * * * * 
* * * * * * * 
  * * * * * 
    * * * 
      * 
        
 
	 */
	public static void main(String[] args) {
		//这个写法我是通过改变每次循环的判定条件表达式来做的.可以去思考.
		for (int j = 1; j <= 4; j++) {
			for (int a = 3; a >= j; a--) {
				System.out.print("  ");
			}
			for (int b = 1; b <= 2 * j - 1; b++) {
				System.out.print("* ");
			}
			System.out.println();
		}
		for (int i = 1; i <= 4; i++) {
			for (int a = 1; a <= i; a++) {
				System.out.print("  ");
			}
			for (int b = i; b <= 2 * 3 - i; b++) {
				System.out.print("* ");
			}
			System.out.println();
		}

	}

}