题解 | #箭形图案#

• 注意：是2倍的空格。。。。

while True:
    try:
        x = int(input())
        for i in range(x):
            print("  "*(x-i) +"*"*(i+1))
        for j in range(x+1):
            print("  "*j + "*"*(x+1-j))

    except:
        break