打印三角*

 

public static void print() {        //上半部分        for (int x = 0; x < 3; x++) {            for (int k = 0; k < 2 * x + 1; k++) {                System.out.print("*");            }                         System.out.println("");        }                //下半部分       for (int x = 0; x < 2; x++) {            for (int k = 4; k > 2 * x + 1; k--) {                System.out.print("*");            }                         System.out.println("");        }            }

输出为

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