CHAPTER11-4.cpp
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上传日期:2007-07-03
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- //文件名:CHAPTER11-4.cpp
- #include <list>
- #include <vector>
- #include <algorithm>
- #include <iostream>
- // Return whether second element is twice the first
- bool twice ( int elem1, int elem2 )
- { return 2 * elem1 == elem2;}
- int main( )
- {
- using namespace std;
- list <int> L;
- list <int>::iterator Iter;
- list <int>::iterator result;
- L.push_back( 40 );
- L.push_back( 20 );
- L.push_back( 10 );
- L.push_back( 40 );
- L.push_back( 10 );
- cout << "L = ( " ;
- for ( Iter = L.begin( ) ; Iter != L.end( ) ; Iter++ ) cout << *Iter << " ";
- cout << ")" << endl;
- result = find( L.begin( ), L.end( ), 10 );
- if ( result == L.end( ) ) cout << "There is no 10 in list L." << endl;
- else result++;
- cout << "There is a 10 in list L and it is"<< " followed by a " << *(result) << "." << endl;
- vector <int> v1, v2;
- list <int> L1;
- vector <int>::iterator Iter1, Iter2;
- list <int>::iterator L1_Iter, L1_inIter;
- int i;
- for ( i = 0 ; i <= 5 ; i++ ){v1.push_back( 5 * i );}
- for ( i = 0 ; i <= 5 ; i++ ){v1.push_back( 5 * i );}
- int ii;
- for ( ii = 1 ; ii <= 4 ; ii++ ){L1.push_back( 5 * ii );}
- int iii;
- for ( iii = 2 ; iii <= 4 ; iii++ ){v2.push_back( 10 * iii );}
- cout << "Vector v1 = ( " ;
- for ( Iter1 = v1.begin( ) ; Iter1 != v1.end( ) ; Iter1++ ) cout << *Iter1 << " ";
- cout << ")" << endl;
- cout << "List L1 = ( " ;
- for ( L1_Iter = L1.begin( ) ; L1_Iter!= L1.end( ) ; L1_Iter++ )cout << *L1_Iter << " ";
- cout << ")" << endl;
- cout << "Vector v2 = ( " ;
- for ( Iter2 = v2.begin( ) ; Iter2 != v2.end( ) ; Iter2++ ) cout << *Iter2 << " ";
- cout << ")" << endl;
- // Searching v1 for a match to L1 under identity
- vector <int>::iterator result1;
- result1 = find_end ( v1.begin( ), v1.end( ), L1.begin( ), L1.end( ) );
- if ( result1 == v1.end( ) ) cout << "There is no match of L1 in v1."<< endl;
- else cout << "There is a match of L1 in v1 that begins at "
- << "position "<< result1 - v1.begin( ) << "." << endl;
- // Searching v1 for a match to L1 under the binary predicate twice
- vector <int>::iterator result2;
- result2 = find_end ( v1.begin( ), v1.end( ), v2.begin( ), v2.end( ), twice );
- if ( result2 == v1.end( ) ) cout << "There is no match of L1 in v1."<< endl;
- else cout << "There is a sequence of elements in v1 that "
- << "are equivalent to thosen in v2 under the binary "
- << "predicate twice and that begins at position "<< result2 - v1.begin( ) << "." << endl;
- }