学步园

#include <iostream><br /> #include <vector><br /> #include <list><br /> #include <algorithm><br /> using namespace std;<br /> bool myfunction(std::string one, std::string two)<br /> {<br /> if(one.length() > two.length())<br /> {<br /> return true;<br /> }<br /> else<br /> {<br /> return false;<br /> }<br /> }<br /> bool myfunction1(std::string first, std::string second)<br /> {<br /> if(first.length() < second.length())<br /> {<br /> return true;<br /> }<br /> else<br /> {<br /> return false;<br /> }<br /> }<br /> struct myclass<br /> {<br /> bool operator()(std::string first,std::string second)<br /> {<br /> if(first.length() < second.length())<br /> {<br /> return true;<br /> }<br /> else<br /> {<br /> return false;<br /> }<br /> }<br /> }myobject;<br /> //print<br /> void print(list<std::string>& li)<br /> {<br /> std::list<std::string>::iterator it;</p> <p> std::cout << "/nlist's length: " << li.size() << " list's content is " << endl;<br /> for(it = li.begin(); it != li.end(); it++)<br /> {<br /> std::cout << (*it).c_str() << " ";<br /> }</p> <p> std::cout << endl;<br /> }<br /> void sort_list()<br /> {<br /> list<std::string> li;<br /> li.push_back("hello");<br /> li.push_back("tree");<br /> li.push_back("world");<br /> li.push_back("my");<br /> li.push_back("I");<br /> li.push_back("computer");<br /> li.push_back("tree");<br /> li.push_back("forest");</p> <p> //print before sort<br /> print(li);</p> <p> //sort<br /> li.sort(myfunction);<br /> print(li);</p> <p> li.sort(myfunction1);<br /> print(li);<br /> li.sort(myobject);<br /> print(li);</p> <p> return;<br /> }<br /> int main()<br /> {<br /> sort_list();<br /> }</p> <p>

执行输出：

ewuming/tmp>g++ -o b.out sort_list.cc
ewuming/tmp>./b.out
 
list's length: 8 list's content is
hello  tree  world  my  I  computer  tree  forest
 
list's length: 8 list's content is
computer  forest  hello  world  tree  tree  my  I
 
list's length: 8 list's content is
I  my  tree  tree  hello  world  forest  computer
 
list's length: 8 list's content is
I  my  tree  tree  hello  world  forest  computer