reverse_copy (STL Samples)
Nasıl kullanılacağı gösterilmiştir reverse_copy Visual C++ standart şablon kitaplığı (stl) işlevi.
template<class BidirectionalIterator, class OutputIterator> inline
OutputIterator reverse_copy(
BidirectionalIterator First,
BidirectionalIterator Last,
OutputIterator Result
)
Notlar
Not
Prototip sınıfı/parametre adları üstbilgi dosyasında sürüm eşleşmiyor.Bazıları, okumayı kolaylaştırmak için değiştirildi.
reverse_copy Algoritması aralıktaki öğelerin sırasını ters çevirir [First, Last) ve sonuç aynı boyutu başlayarak sırası kopyalar sonucu. Bunu hemen sonra ortaya çıkan sıradaki son yeni öğe yerleştirilmiş bir yineleyici döndürür.
Örnek
// reverse_copy.cpp
// compile with: /EHsc
// Illustrates how to use the reverse_copy function.
//
// Functions:
// reverse_copy - Reverse a sequence, copy the results to another
// same-sized sequence.
//
//////////////////////////////////////////////////////////////////////
// disable warning C4786: symbol greater than 255 character,
// okay to ignore
#pragma warning(disable: 4786)
#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <functional>
using namespace std ;
int main()
{
const int VECTOR_SIZE = 8 ;
// Define a template class vector of strings
typedef vector<string> StrVector ;
//Define an iterator for template class vector of strings
typedef StrVector::iterator StrVectorIt ;
StrVector Tongue_Twister(VECTOR_SIZE) ;
StrVector Reversed_Twister(VECTOR_SIZE) ;
StrVectorIt start, end, it, RTstart, RTend ;
start = Tongue_Twister.begin() ; // location of first
// element of Tongue_Twister
end = Tongue_Twister.end() ; // one past the location last
// element of Tongue_Twister
RTstart = Reversed_Twister.begin() ; // location of first
// element of Reversed_Twister
RTend = Reversed_Twister.end() ; // one past the location last
// element of Reversed_Twister
//Initialize vector Tongue_Twister
Tongue_Twister[0] = "she";
Tongue_Twister[1] = "sells";
Tongue_Twister[2] = "sea";
Tongue_Twister[3] = "shells";
Tongue_Twister[4] = "by";
Tongue_Twister[5] = "the";
Tongue_Twister[6] = "sea";
Tongue_Twister[7] = "shore";
cout << "Before calling reverse_copy" << endl ;
// print content of Tongue_Twister
cout << "Try this Tongue Twister:";
for(it = start; it != end; it++)
cout << " " << *it;
// reverse the items in the vector Tongue_Twister
// and copy the results to Reversed_Twister
reverse_copy(start, end, RTstart);
cout << "\n\nAfter calling reverse_copy" << endl ;
// print content of Tongue_Twister
cout << "Tongue_Twister: ";
for(it = start; it != end; it++)
cout << *it << " ";
// print content of Reversed_Twister
cout << "\n\nNow try the reversed Tongue Twister:" ;
for(it = RTstart; it != RTend; it++)
cout << " " << *it;
}
Çıktı
Before calling reverse_copy
Try this Tongue Twister: she sells sea shells by the sea shore
After calling reverse_copy
Tongue_Twister: she sells sea shells by the sea shore
Now try the reversed Tongue Twister: shore sea the by shells sea sells she
Gereksinimler
Başlık: <algorithm>