added 72 characters in body

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edited Dec 8, 2017 at 13:36

Perl 5, 17 + 2 (-pl) = 19 bytes

odd lines reversed

$_=reverse if$.%2

even lines reversed

$_=reverse if$|--

After @Martin's comment : input needs to have a trailing linefeed.

$_=reverse if$.%2

After @Martin's comment : input needs to have a trailing linefeed.

odd lines reversed

$_=reverse if$.%2

even lines reversed

$_=reverse if$|--

After @Martin's comment : input needs to have a trailing linefeed.

deleted 51 characters in body

Source Link

edited Dec 8, 2017 at 13:28

$_=reverse if$|++if$.%2

try it online After @Martin's comment : input needs to have a trailing linefeed.

$_=reverse if$|++

$_=reverse if$.%2

After @Martin's comment : input needs to have a trailing linefeed.

Source Link

created Dec 8, 2017 at 13:09

$_=reverse if$|++

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