More elegant ways to reverse integers, arrays, and strings in Python

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More elegant ways to reverse integers, arrays, and strings in Python

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#1 by (6 votes)

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I've been looking for elegant ways to reverse strings, arrays, and integers in Python.

What do you think of my codes below and what do they suggest to improve them? They work ...

Thank you!

frase = 'eu gosto de python'[::-1]
numero = [12, 13, 14, 15, 16, 17]
inteiro = 123456
numeroInvertido = int(str(inteiro)[::-1])
print frase
print numero [::-1]
print numeroInvertido

string python array inteiros

asked by anonymous 28.10.2015 / 00:33

1 answer

Access properties without knowing name Authorization of users to actions that use the Authorize attribute

score 6 · Accepted Answer

On this form:

frase = 'eu gosto de python'[::-1]

Not only is it the most performative but also the fastest for all cases. This also applies to this form:

numero = [12, 13, 14, 15, 16, 17][::-1]

And so, this:

numeroInvertido = int(str(inteiro)[::-1])

In the case of strings , there is still this form:

''.join(reversed('eu gosto de python'))

But this form is slower.

For lists, you can still do:

list(reversed([12, 13, 14, 15, 16, 17]))

Also slower. Or even:

numero = [12, 13, 14, 15, 16, 17]
print(numero.reverse())

In summary, yes, you use the best ways to invert the data structures mentioned.