for循環語句實例

實例1：九九乘法口訣表

for i in range(9,0,-1):
    for k in range(1,i):
        print(end = "        ")
    for j in range(i,10):
            print("{}*{}={}\t".format(j,i,j*i),end = "")
    print()

實例2:輸入奇數打印菱形

a = int(input("請輸入行數（必須是奇數)："))
for i in range((-a//2),(a//2+1)):
    print(" "*abs(i)+"*"*(a-2*abs(i)))

a = int(input("請輸入行數（必須是奇數)："))
i = -a//2+1
while i <= a//2:
    print(" "*abs(i),end="")
    print("*"*(a-2*abs(i)))
    i += 1

a = int(input("請輸入行數（必須是奇數)："))
for i in range((-a//2),(a//2+1)):
    print(" "*abs(i)+"*"*(a-2*abs(i)))

實例3：星號塔層數

n = int(input("請輸入星號塔的層數："))
for i in range(n,0,-1):
    print("{} {}".format(" "*(i-1),"*"* (2*(n-i)+1)))

 

參考菜鳥教程：https://www.runoob.com/python/python-for-loop.html

參考W3school：https://www.w3school.com.cn/python/python_for_loops.asp