114 lines
4.2 KiB
C++
114 lines
4.2 KiB
C++
// fig13_04.cpp
|
|
// Standard library list class template.
|
|
#include <algorithm> // copy algorithm
|
|
#include <iostream>
|
|
#include <iterator> // ostream_iterator
|
|
#include <list> // list class-template definition
|
|
#include <vector>
|
|
|
|
// printList function template definition; uses
|
|
// ostream_iterator and copy algorithm to output list elements
|
|
template <typename T>
|
|
void printList(const std::list<T>& items) {
|
|
if (items.empty()) { // list is empty
|
|
std::cout << "List is empty";
|
|
}
|
|
else {
|
|
std::ostream_iterator<T> output{std::cout, " "};
|
|
std::ranges::copy(items, output);
|
|
}
|
|
}
|
|
|
|
int main() {
|
|
std::list<int> values{}; // create list of ints
|
|
|
|
// insert items in values
|
|
values.push_front(1);
|
|
values.push_front(2);
|
|
values.push_back(4);
|
|
values.push_back(3);
|
|
|
|
std::cout << "values contains: ";
|
|
printList(values);
|
|
|
|
values.sort(); // sort values
|
|
std::cout << "\nvalues after sorting contains: ";
|
|
printList(values);
|
|
|
|
// insert elements of ints into otherValues
|
|
std::vector ints{2, 6, 4, 8};
|
|
std::list<int> otherValues{}; // create list of ints
|
|
otherValues.insert(otherValues.cbegin(), ints.cbegin(), ints.cend());
|
|
std::cout << "\nAfter insert, otherValues contains: ";
|
|
printList(otherValues);
|
|
|
|
// remove otherValues elements and insert at end of values
|
|
values.splice(values.cend(), otherValues);
|
|
std::cout << "\nAfter splice, values contains: ";
|
|
printList(values);
|
|
|
|
values.sort(); // sort values
|
|
std::cout << "\nAfter sort, values contains: ";
|
|
printList(values);
|
|
|
|
// insert elements of ints into otherValues
|
|
otherValues.insert(otherValues.cbegin(), ints.cbegin(), ints.cend());
|
|
otherValues.sort(); // sort the list
|
|
std::cout << "\nAfter insert and sort, otherValues contains: ";
|
|
printList(otherValues);
|
|
|
|
// remove otherValues elements and insert into values in sorted order
|
|
values.merge(otherValues);
|
|
std::cout << "\nAfter merge:\n values contains: ";
|
|
printList(values);
|
|
std::cout << "\n otherValues contains: ";
|
|
printList(otherValues);
|
|
|
|
values.pop_front(); // remove element from front
|
|
values.pop_back(); // remove element from back
|
|
std::cout << "\nAfter pop_front and pop_back:\n values contains: ";
|
|
printList(values);
|
|
|
|
values.unique(); // remove duplicate elements
|
|
std::cout << "\nAfter unique, values contains: ";
|
|
printList(values);
|
|
|
|
values.swap(otherValues); // swap elements of values and otherValues
|
|
std::cout << "\nAfter swap:\n values contains: ";
|
|
printList(values);
|
|
std::cout << "\n otherValues contains: ";
|
|
printList(otherValues);
|
|
|
|
// replace contents of values with elements of otherValues
|
|
values.assign(otherValues.cbegin(), otherValues.cend());
|
|
std::cout << "\nAfter assign, values contains: ";
|
|
printList(values);
|
|
|
|
// remove otherValues elements and insert into values in sorted order
|
|
values.merge(otherValues);
|
|
std::cout << "\nAfter merge, values contains: ";
|
|
printList(values);
|
|
|
|
values.remove(4); // remove all 4s
|
|
std::cout << "\nAfter remove(4), values contains: ";
|
|
printList(values);
|
|
std::cout << "\n";
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
* (C) Copyright 1992-2022 by Deitel & Associates, Inc. and *
|
|
* Pearson Education, Inc. All Rights Reserved. *
|
|
* *
|
|
* DISCLAIMER: The authors and publisher of this book have used their *
|
|
* best efforts in preparing the book. These efforts include the *
|
|
* development, research, and testing of the theories and programs *
|
|
* to determine their effectiveness. The authors and publisher make *
|
|
* no warranty of any kind, expressed or implied, with regard to these *
|
|
* programs or to the documentation contained in these books. The authors *
|
|
* and publisher shall not be liable in any event for incidental or *
|
|
* consequential damages in connection with, or arising out of, the *
|
|
* furnishing, performance, or use of these programs. *
|
|
**************************************************************************/
|
|
|