Loop backwards using indices

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Chapters
00:00 Loop Backwards Using Indices
00:18 Accepted Answer Score 559
00:34 Answer 2 Score 50
00:46 Answer 3 Score 253
00:57 Answer 4 Score 19
01:09 Thank you

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Full question
https://stackoverflow.com/questions/8698...

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Content licensed under CC BY-SA
https://meta.stackexchange.com/help/lice...

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Tags
#python #loops

#avk47

ACCEPTED ANSWER

Score 559

Try range(100,-1,-1), the 3rd argument being the increment to use (documented here).

("range" options, start, stop, step are documented here)

ANSWER 2

Score 253

In my opinion, this is the most readable:

for i in reversed(range(101)):
    print(i)

ANSWER 3

Score 50

for i in range(100, -1, -1)

and some slightly longer (and slower) solution:

for i in reversed(range(101))

for i in range(101)[::-1]

ANSWER 4

Score 19

Generally in Python, you can use negative indices to start from the back:

numbers = [10, 20, 30, 40, 50]
for i in xrange(len(numbers)):
    print numbers[-i - 1]

Result: