how to get last element of set in c++
To get the last element of a set in C++, you can use the rbegin()
function along with the dereferencing operator *
. Here are the steps to do it:
Create a set: Start by creating a set variable and populating it with elements. Sets in C++ are containers that store unique elements in a specific order.
Access the last element: To access the last element of the set, use the
rbegin()
function, which returns a reverse iterator pointing to the last element. Then, use the dereference operator*
to obtain the actual value of the element.
Here's an example code snippet that demonstrates how to get the last element of a set in C++:
#include <iostream>
#include <set>
int main() {
std::set<int> mySet = {1, 2, 3, 4, 5};
// Access the last element
int lastElement = *mySet.rbegin();
std::cout << "Last element: " << lastElement << std::endl;
return 0;
}
In this example, the set mySet
is created and populated with integers. The rbegin()
function returns a reverse iterator pointing to the last element, and the dereference operator *
is used to obtain the value of the last element. Finally, the last element is printed using std::cout
.
When you run this code, the output will be:
Last element: 5
This indicates that the last element of the set is 5
.