65 lines
2.6 KiB
C++
65 lines
2.6 KiB
C++
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// fig14_08.cpp
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// Algorithms swap, iter_swap and swap_ranges.
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#include <algorithm>
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#include <array>
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#include <iostream>
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#include <iterator>
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int main() {
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std::array values{1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
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std::ostream_iterator<int> output{std::cout, " "};
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std::cout << "values contains: ";
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std::ranges::copy(values, output);
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std::swap(values[0], values[1]); // swap elements at index 0 and 1
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std::cout << "\nafter std::swap of values[0] and values[1]: ";
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std::ranges::copy(values, output);
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// use iterators to swap elements at locations 0 and 1
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std::iter_swap(values.begin(), values.begin() + 1);
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std::cout << "\nafter std::iter_swap of values[0] and values[1]: ";
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std::ranges::copy(values, output);
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// swap values and values2
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std::array values2{10, 9, 8, 7, 6, 5, 4, 3, 2, 1};
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std::cout << "\n\nBefore swap_ranges\nvalues contains: ";
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std::ranges::copy(values, output);
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std::cout << "\nvalues2 contains: ";
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std::ranges::copy(values2, output);
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std::ranges::swap_ranges(values, values2);
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std::cout << "\n\nAfter swap_ranges\nvalues contains: ";
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std::ranges::copy(values, output);
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std::cout << "\nvalues2 contains: ";
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std::ranges::copy(values2, output);
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// swap first five elements of values and values2
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std::ranges::swap_ranges(values.begin(), values.begin() + 5,
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values2.begin(), values2.begin() + 5);
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std::cout << "\n\nAfter swap_ranges for 5 elements"
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<< "\nvalues contains: ";
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std::ranges::copy(values, output);
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std::cout << "\nvalues2 contains: ";
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std::ranges::copy(values2, output);
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std::cout << "\n";
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}
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/**************************************************************************
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* (C) Copyright 1992-2021 by Deitel & Associates, Inc. and *
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* Pearson Education, Inc. All Rights Reserved. *
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* *
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* DISCLAIMER: The authors and publisher of this book have used their *
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* best efforts in preparing the book. These efforts include the *
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* development, research, and testing of the theories and programs *
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* to determine their effectiveness. The authors and publisher make *
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* no warranty of any kind, expressed or implied, with regard to these *
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* programs or to the documentation contained in these books. The authors *
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* and publisher shall not be liable in any event for incidental or *
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* consequential damages in connection with, or arising out of, the *
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* furnishing, performance, or use of these programs. *
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**************************************************************************/
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