chapter11-8.cpp

C++STL程序员开发指南

//文件名:CHAPTER11-8.cpp
#include <vector>
#include <algorithm>
#include <iostream>
int main( )
{
   using namespace std;
   vector <int> v1, v2;
   vector <int>::iterator Iter1, Iter2;
   int i;
   for ( i = 0 ; i <= 5 ; i++ ) { v1.push_back( 10 * i ); }
   int ii;
   for ( ii = 0 ; ii <= 10 ; ii++ )  { v2.push_back( 3 * ii ); }
   cout << "v1 = ( " ;
   for ( Iter1 = v1.begin( ) ; Iter1 != v1.end( ) ; Iter1++ ) cout << *Iter1 << " ";
   cout << ")" << endl<< "v2 = ( " ;
   for ( Iter2 = v2.begin( ) ; Iter2 != v2.end( ) ; Iter2++ ) cout << *Iter2 << " ";
   cout << ")" << endl;
   // To copy the first 3 elements of v1 into the middle of v2
   copy( v1.begin( ), v1.begin( ) + 3, v2.begin( ) + 4 );
   cout << "v2 with v1 insert = ( " ;
   for ( Iter2 = v2.begin( ) ; Iter2 != v2.end( ) ; Iter2++ ) cout << *Iter2 << " ";
   cout << ")" << endl;
   // To shift the elements inserted into v2 two positions to the left
   copy( v2.begin( )+4, v2.begin( ) + 7, v2.begin( ) + 2 );
   cout << "v2 with shifted insert = ( " ;
   for ( Iter2 = v2.begin( ) ; Iter2 != v2.end( ) ; Iter2++ ) cout << *Iter2 << " ";
   cout << ")" << endl;
   // To shift the elements inserted into v2 two positions to the right
   copy_backward( v2.begin( )+4, v2.begin( ) + 7, v2.begin( ) + 9 );
   cout << "v2 with shifted insert = ( " ;
   for ( Iter2 = v2.begin( ) ; Iter2 != v2.end( ) ; Iter2++ ) cout << *Iter2 << " ";
   cout << ")" << endl;
}