12．在屏幕上打印以下图形(循环语句)******************************************************************************

Question

12． 在屏幕上打印以下图形(循环语句) * *** ***** ******* ********* ******* ***** *** *
*
***
*****
*******
*********
*******
*****
***
*

Answer 1

//上半部分
for (int i = 0; i < 9/2; i++)
{
for (int j = i; j <9/2; j++)
{
Console.Write(" ");
}
for (int n = 0; n < i*2+1; n++)
{
Console.Write("*");
}
Console.WriteLine();
}
//下半部分
for (int i = 9/2; i < 9; i++)
{
for (int j = 9/2; j {
Console.Write(" ");
}
for (int n = (i - 9 / 2) * 2 ; n <9; n++)
{
Console.Write("*");
}
Console.WriteLine();
}

如果是我自己需要写的话,我不会写的那么乱,会拆分成小的模块儿,类似于这种

private static void ShowBlank(int begin, int end)
{

for (int i = begin; i < end; i++)
{

Console.Write(" ");
}
}

private static void ShowStar(int begin, int end)
{

for (int i = begin; i < end; i++)
{

Console.Write("*");
}
}

private static void Show()
{

for (int i = 0; i < 9; i++)
{

if (i < 4)
{
ShowBlank(i, 4);
ShowStar(0, i * 2+1);
}

else
{
ShowBlank(4,i);
ShowStar((i-4)*2,9);
}

Console.WriteLine();
}
}