python如何打印九九乘法表

Answer 1

1、使用for-for

#九九乘法表

for i in range(1.10)

for j in range(1.i+1):

print('{}x{}={}\t'.format(j,i,i*j),end='')

print()

2、while-while

# 九九乘法表

i = 1

while i <= 9:

j = 1

while(j <= i): #j的大小是由i来控制的

print('%d*%d=%-3d' %(i, j, i*j),end='\t' )

j += 1

print('')

i += 1

3、while-for

i = 1

while(i <=9):

for j in range (1.i+1): #range()函数左闭右开

print('%d*%d=%-3d'%(i,j,i*j),end='')

i += 1

print()

4、for-while

for i in range(1.10):

j = 0

while j < i:

j += 1

print("%d*%d=%-3d"%(i,j,i*j),end='')

print()

5、定义一个变量a

a = [1. 2. 3. 4. 5. 6. 7. 8. 9]

for i in a:

j = 1

while j <= i:

print('%d*%d=%-3d'%(i,j,i*j),end='\t')

# %-3d 是控制输出结果占据3位，且从左面开始对齐

j += 1

print()

6、使用1行语句

print('\n' .join([' '.join(["%2s x%2s = %2s" % (j, i, i*j)for j in range(1. i+1)])for i in range(1. 10)]))

Answer 2

# python打印九九乘法表
for i in range(1, 10):
for j in range(1, i+1):
print('{}x{}={}\t'.format(j, i, i*j), end='')
print()