[for循环之等腰三角形]

 public class IsoscelesTriangle {
/*** 等腰三角形*/public void print1(){//形如 ▲向上的 for(int i=1;i<=5;i++){for(int k=1;k<=5-i;k++)System.out.print(" ");for(int j=1;j<=2*i-1;j++)System.out.print("*");System.out.print("\n");}}public void print2(){//形如：倒▲ 向下的 for(int i=1;i<=5;i++){for(int j=1;j<=i-1;j++)System.out.print(" ");for(int k=1;k<=11-(2*i);k++)System.out.print("*");System.out.print("\n");}}public static void main(String[] args) {IsoscelesTriangle app = new IsoscelesTriangle();System.out.println("---------------------------");app.print1();System.out.println("---------------------------");app.print2();System.out.println("---------------------------");}
}