while实现图形打印的练习

while打印矩形

实现代码

# *_*coding:utf-8 *_*
# author:yuhuashang
x = 1
y = 1
while y <= 10:
while x <= 10:
print("*", end="")
x += 1
x = 1
y+= 1
print("\n")

while打印九九乘法表

实现代码

# *_*coding:utf-8 *_*
# author:yuhuashang
x = 1

while x <= 9:
y = 1
while y <= x:
print("%d*%d=%d\t"%(y, x, x*y), end="")
y += 1
x += 1
print("\n")

打印倒等边三角形

实现代码

# *_*coding:utf-8 *_*
# author:yuhuashang

num = int(input("请输入行号："))

a = 0
while a < num:

b = 0
while b < a:
print(" ", end="")
b += 1

c = num - a
while c > 0:
print("* ", end="")
c -= 1

print("\n")
a += 1