版本一:
for i in range(1,10):
for j in range(1,i+1):
print( '%d X %d = %d' % (j,i,i*j),end = ' ' )
print(' ')
版本二:
for i in range (1,10):
for j in range(1,10):
print('%d X %d = %d' % (j,i,i*j),end = ' ')
if i==j:
print('')
break
版本三:
i = 1
while i <= 9:
j = 1
while j <= i:
print('%d X %d = %d' % (j,i,i*j),end = ' ')
j += 1
print('')
i += 1