# 方法一,用嵌套for循环实现99乘法表
def one_question01():
for i in range(1,10):
for j in range(1, i+1):
print('{}*{}={}'.format(i, j, i*j), end='\t')
print('\n')
one_question01()
# 方法二,用嵌套while循环实现99乘法表
def one_question02():
index = 1
while index <= 9:
i = 1
while i <= index:
print('{}*{}={}'.format(index, i, i*index), end='\t')
i += 1
print('\n')
index += 1
# one_question02()
# 方法三,用while嵌套for循环实现99乘法表
def one_question03():
index=1
while index <= 9:
for i in range(1, index+1):
print('{}*{}={}'.format(index, i, i*index), end='\t')
print('\n')
index += 1
# one_question03()
# 方法四,用for嵌套while循环实现99乘法表
def one_question04():
for index in range(1, 10):
i = 1
while i <= index:
print('{}*{}={}'.format(index,