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From: Oscar Benjamin <oscar.j.benjamin@gmail.com>
Date: Sun, 9 Feb 2014 13:41:35 +0000
Subject: Re: Sort one sequence by O(n) in time and O(1) in space
To: Wesley <nispray@gmail.com>
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On 9 February 2014 12:13, Wesley <nispray@gmail.com> wrote:
> Hi guys,
>    Here is one question related to algorithm.
> Details here:
>
> here is input sequence like a1,a2,...,an,b1,b2,...,bn =EF=BC=8Cthe ax and=
 bx always exist in pair. So, now, how to change the sequence to a1,b1,...,=
an,bn, with time complexity as O(n) and space as O(1).

Do you mean that you have a list and you want to rearrange the
elements in-place without creating a new list?


Oscar