Re: problem in stl

From:
"Alf P. Steinbach" <alfps@start.no>
Newsgroups:
comp.lang.c++
Date:
Mon, 15 Feb 2010 11:16:43 +0100
Message-ID:
<hlb6qm$nup$1@news.eternal-september.org>
* vicky:

On Feb 15, 1:29 am, Andr? Schreiter <andre.schrei...@gmx.de> wrote:

Am 15.02.2010 10:18, schrieb vicky:

i declares a vector and uses its sort function, acc. to a tutorial.

std::vector hasn't a sort function. Use the header <algorithm>:

#include <algorithm>
#include <vector>

...
std::vector<int> c;
...
std::sort(c.begin(), c.end());
...


but i m reading a book of "Nicolai M. Josuttis". it is highly
recommended one.He has used it many a times.
Is it like it was before and now removed.?


I think you may have seen use of

    list<int> someList;
    someList.sort()

but not vector.

It may not appear to be very unified, but the unification is via the std::sort
routine.

The headers for types like vector and sort provide overloads of std::sort where
appropriate. For a type where there's no such override std::sort uses a general
algorithm that requires random access, like indexing of a vector. But that
doesn't work for std::list, so std::list has a sort() member function
(presumably it uses merge sorting or some such that's better suited for linked
lists), and overrides std::sort to call that member function.

Cheers & hth.,

- Alf

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