chapter2-27.cpp

C++STL程序员开发指南

//文件名:CHAPTER2-27.cpp
#include <string> 
#include <iostream> 
#include <algorithm> 
using namespace std;
int main() 
{ //create constant string
	const string hello("Hello, how are you?");
	//initialize string s with all characters of string hello
	string s(hello.begin(),hello.end());
	//iterate through all of the characters
	string::iterator pos;
	for (pos = s.begin(); pos != s.end(); ++pos) 
	{ 		cout << *pos; 	} 
	cout << endl;
	//reverse the order of all characters inside the string
	reverse (s.begin(), s.end()); 
	cout << "reverse: " << s << endl;
	//sort all characters inside the string
	sort (s.begin(), s.end()); 
	cout << "ordered: " << s << endl;
	/*remove adjacent duplicates
	*-unique() reorders and returns new end
	*-erase() shrinks accordingly
	*/ 
	s.erase (unique(s.begin(), s.end()), s.end()); 
	cout << "no duplicates: " << s << endl; 
}