用向量除以向量中的所有元素 [英] divide all elements in a vector by a number
问题描述
亲爱的，
我想知道我是否可以将该向量的所有元素除以该向量的最大值
元素。
我检查了STL引用并找到了transform，for_each和最近
BOOST_FOREACH，但是transform和for_each算法不适合
因为我有另一个提供给函数的论据，即
max_element。我想知道这是否可行通过
标准。
BOOST_FOREACH对我来说似乎是最好的选择。但我想知道:)
Rgds，
Dear all,
I was wondering if I could divide all elements of a vector by the max
element of that vector.
I checked the STL references and found transform, for_each and lately
BOOST_FOREACH, but transform and for_each algorithms are not suited
since I have another argument to supply to the functions, namely
max_element. I wondered if this is possible or not through the
standard.
BOOST_FOREACH seemed the best option to me. But I wondered :)
Rgds,
推荐答案
utab写道：
utab wrote:
亲爱的，
我想知道我是否可以将矢量的所有元素除以最大值
。该向量的元素。
我检查了STL引用并找到了transform，for_each和最近
BOOST_FOREACH，但是transform和for_each算法不适合
因为我有另一个参数供给函数，即
max_element。我想知道这是否可行通过
标准。
BOOST_FOREACH对我来说似乎是最好的选择。但我想知道:)
Dear all,
I was wondering if I could divide all elements of a vector by the max
element of that vector.
I checked the STL references and found transform, for_each and lately
BOOST_FOREACH, but transform and for_each algorithms are not suited
since I have another argument to supply to the functions, namely
max_element. I wondered if this is possible or not through the
standard.
BOOST_FOREACH seemed the best option to me. But I wondered :)
每个人都应该做自己的功课。
V
-
请在通过电子邮件回复时删除资金''A'
我没有回复最热门的回复，请不要问
Everybody is supposed to do their own homework.
V
--
Please remove capital ''A''s when replying by e-mail
I do not respond to top-posted replies, please don''t ask
utab写道：
utab wrote:
我想知道是否可以将矢量的所有元素除以max
该向量的元素。
I was wondering if I could divide all elements of a vector by the max
element of that vector.
写一个简单的for循环真的很难吗？它可能会比STL杂技更容易阅读。
也可能更短。
Is it really that hard to write a simple for-loop? It will probably be
easier to read than the STL acrobatics needed to do the same thing.
Probably shorter too.
2007年11月15日星期四08:35:52 -0800（太平洋标准时间）在comp.lang.c ++，utab
< um ******** @ gmail.comwrote ，
On Thu, 15 Nov 2007 08:35:52 -0800 (PST) in comp.lang.c++, utab
<um********@gmail.comwrote,
>亲爱的，
我想知道我是否可以通过max
元素划分向量的所有元素那个向量。
我检查了STL引用并找到了transform，for_each和最近的BOOST_FOREACH，但是transform和for_each算法不适合
因为我有另一个参数供给函数，
>Dear all,
I was wondering if I could divide all elements of a vector by the max
element of that vector.
I checked the STL references and found transform, for_each and lately
BOOST_FOREACH, but transform and for_each algorithms are not suited
since I have another argument to supply to the functions,
你在那里，现在检查绑定家庭，例如
std :: bind2nd或强大的boost :: bind版本。
有些东西（未经检查！）
std :: transform（v.begin（），v.end（），v.begin（），
std :: bind2nd（std :: divides< double> ;，
std :: max_element（v.begin（），v.end（）））;
You are halfway there, now check the "bind" family, for example
std::bind2nd or the powerful boost::bind versions.
Something along the lines of (unchecked!)
std::transform(v.begin(), v.end(), v.begin(),
std::bind2nd(std::divides<double>,
std::max_element(v.begin(), v.end()));
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