How do I merge and splice sequences with std::set?

In C++, the `std::set` container provides a way to store unique elements in a sorted manner. Merging two sets or splicing sequences can be done using set operations. This is particularly useful when you want to combine data from different sets while retaining their uniqueness and order.

Merging Two Sets

To merge two sets, you can use the `insert` function, which allows you to add elements from one set to another.

Splicing Sequences

Splicing in sets typically refers to transferring elements from one container to another while maintaining their values and not duplicating them. However, in the case of `std::set`, this operation is not directly available since sets do not support splicing in the same way other containers like `std::list` do.

Example

#include #include int main() { std::set setA = {1, 2, 3, 4}; std::set setB = {3, 4, 5, 6}; // Merging setB into setA setA.insert(setB.begin(), setB.end()); // Displaying merged set std::cout << "Merged Set: "; for (const auto &value : setA) { std::cout << value << " "; } std::cout << std::endl; return 0; }

C++ std::set merge sets splice sequences C++ containers

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