How to do inverse pyramid while using while loop in python-CodePudding

I need help in doing this. We need to create a code where the output must be the inverse of this code

Sample code(our basis):

line = 1
while line <= 5:
    number = 1
    while number <= line:
        print(number, end = '')
        number = number   1
    line = line   1
    print('')

Output:

It must be:

May you help me?

CodePudding user response：

Here's some code

line = 5
while line >= 1:
number = 1
while number <= line:
    print(number, end = '')
    number = number   1
line = line - 1
print('')

CodePudding user response：

Well, there are several ways to write a pyramid.

Given the requirement to use while:

from functools import reduce


def inverse_pyramid(lines: int) -> None:
    while lines:
        xs = reduce(lambda x, y: str(x)   str(y), range(1, lines   1))
        print(xs)
        lines -= 1

How to without the use of loops:

from functools import reduce


def recursive_inverse_pyramid(lines: int) -> None:
    if lines:
        xs = reduce(lambda x, y: str(x)   str(y), range(1, lines   1))
        print(xs)
        recursive_inverse_pyramid(lines - 1)

How to with map instead of reduce:

def pyramid_mapper(lines: int) -> None:
    if lines:
        xs = map(str, range(1, lines   1))
        print(''.join(xs))
        pyramid_mapper(lines - 1)

How to with a comprehension:

def pyramid_comprehension(lines: int) -> None:
    while lines:
        xs = (str(x) for x in range(1, lines   1))
        print(''.join(xs))
        lines -= 1