用循环结构编写程序，实现显示输出下面由星号构成的小树图案·····谢谢各位大侠啊
   

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

public class Test {
    public static void main(String[] args) {
        for(int i=1; i<=5; i++) {
            for(int k=5-i;k>0;k--){
                System.out.print(" ");
            }
            for(int j=1; j<2+i*2; j++){
                System.out.print("*");
            }
            System.out.println();
        }
        for(int i=0; i<5;i++) {
            System.out.print("   ");
            for(int j=0; j<5; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}

java 嘞···

感觉挺有意思的，运行了一下可以。

public class PrintStar1 {

    public static void main(String[] args) {
        int n=6;
        for(int i=0;i<=n;i++){
            for(int k=0;k<=n-i;k++)
                System.out.print(" ");
            for(int j=1;j<=i-1;j++)
                System.out.print("*");
            for(int m=1;m<=i-1;m++)
                System.out.print("*");
            System.out.println();
        }
        for(int x=1;x<=4;x++)
            System.out.print("    "+"****"+"\n");
        System.out.println();
    }

}

public class Star
{
    public static void main(String[] args)
    {
        for(int i=0;i<5;i++)
        {
            for(int j=0;j<5-i;j++)
            {
                System.out.print(" ");
            }
            for(int k=0;k<(2*i)+1;k++)
            {
                System.out.print("*");
            }
            System.out.println();
        }
        for(int q=0;q<3;q++)
        {
            System.out.println("   *****");
        }
    }
}