Question

用Java程序编写菱形的打印

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

Answer 1

public class Star
{
public static void main(String[] args)
{

for(int h=0;h<=5;h=h+2)
{

for(int u=0;u<6-h;u++)
{
System.out.print(" ");
}
for(int g=5;g>=5-h;g--)
{
System.out.print("*"+" ");
}
System.out.println();

}
for(int i=1;i<=7;i=i+2)
{
for(int j=8-i;j>0;j--)
{
System.out.print("*"+" ");
}
System.out.println();
for(int k=0;k<=i;k++){
System.out.print(" ");
}
}
}
}

Answer 2

class TestDouble
{
public static void main(String[] args)
{
int x,y,z;
for(x=1;x<=4;x++)
{
for(y=0;y<2*x-1;y++)
{
System.out.print("*");
}
System.out.println();
}
for(x=1;x<=3;x++)
{
for(y=0;y<7-2*x;y++)
{
System.out.print("*");
}
System.out.println();
}
}
}