TEST ONE
1、使用循环输出九九乘法表,输出如下结果:
# 九九乘法表
for i in range(1, 10):
# 行循环
for j in range(1, i + 1):
# 列循环
if j == i:
print('%d x %d = %d' % (j, i, i * j))
else:
print('%d x %d = %d' % (j, i, i * j), end=',')
TEST TWO
2、使用循环输出菱形。例如用户输入7(用户输入偶数,则提示不能打印),输出如下结果:
# 初始化循环变量
i = 1
num = 0
# 循环判断输入是否为奇数行,若否则继续要求用户输入
while i:
num = int(input('请输入要打印的行数:'))
if num % 2 != 0:
i = 0
else:
print('偶数行无法打印,请重新输入')
# 图案内容
DRAW = '*'
# 图案数量
draw_num = 1
for j in range(1, num + 1):
# 打印上部
if j < (num + 1) / 2:
print(' ' * ((num - draw_num) // 2) + DRAW * draw_num)
draw_num += 2
# 打印中部
elif j == (num + 1) / 2:
print(DRAW * num)
draw_num -= 2
# 打印下部
else:
print(' ' * ((num - draw_num) // 2) + DRAW * draw_num)
draw_num -= 2
TEST THREE
3、给定5,输出如下
str_list = [
'-', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'
]
# 初始化循环变量
i = 1
num = 0
# 循环判断输入是否为奇数行,若否则继续要求用户输入
while i:
num = int(input('请输入要打印的字母数:'))
if num % 2 != 0:
i = 0
else:
print('偶数个无法打印,请重新输入')
# 初始化每行字符及字符间-的个数 步长4
char_num = 1
# 初始化两头的-个数
gan_num = num * 2 - 2
for j in range(1, num * 2):
# 打印上部
if j < num:
temp_num = num
for k in range(1, num * 3 + 2):
if k <= gan_num:
print(str_list[0], end='')
elif k >= gan_num + 1 and k <= (char_num + 1) // 2 + gan_num:
if k % 2 != 0:
print(str_list[temp_num], end='')
if k != (char_num + 1) // 2 + gan_num:
temp_num -= 1
else:
print(str_list[0], end='')
elif k > (char_num + 1) // 2 + gan_num and k <= char_num + gan_num:
if k % 2 != 0:
temp_num += 1
print(str_list[temp_num], end='')
else:
print(str_list[0], end='')
else:
print(str_list[0], end='')
gan_num -= 2
print('')
char_num += 4
# 打印中部
elif j == num:
# 初始化字符下标变量
temp_num = num
for k in range(1, char_num + 1):
if k % 2 == 0:
print(str_list[0], end='')
elif k <= (char_num + 1) / 2:
print(str_list[temp_num], end='')
if k != (char_num + 1) / 2:
temp_num -= 1
else:
temp_num += 1
print(str_list[temp_num], end='')
print('')
gan_num += 2
# 打印下部
else:
char_num -= 4
temp_num = num
for k in range(1, num * 3 + 2):
if k <= gan_num:
print(str_list[0], end='')
elif k >= gan_num + 1 and k <= (char_num + 1) // 2 + gan_num:
if k % 2 != 0:
print(str_list[temp_num], end='')
if k != (char_num + 1) // 2 + gan_num:
temp_num -= 1
else:
print(str_list[0], end='')
elif k > (char_num + 1) // 2 + gan_num and k <= char_num + gan_num:
if k % 2 != 0:
temp_num += 1
print(str_list[temp_num], end='')
else:
print(str_list[0], end='')
else:
print(str_list[0], end='')
gan_num += 2
print('')