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C++ List Library - sort() Function

The C++ function std::list::sort() sorts the elements of the list in ascending order. The order of equal elements is preserved. It uses operator< for comparison.

Following is the declaration for std::list::sort() function form std::list header.

void sort();

None

None

This member function never throws exception.

Linear i.e. O(n)

The following example shows the usage of std::list::sort() function.

#include <iostream>
#include <list>

using namespace std;

int main(void) {
   list<int> l = {1, 4, 2, 5, 3};

   cout << "Contents of list before sort operation" << endl;

   for (auto it = l.begin(); it != l.end(); ++it)
      cout << *it << endl;

   l.sort();

   cout << "Contents of list after sort operation" << endl;

   for (auto it = l.begin(); it != l.end(); ++it)
      cout << *it << endl;

   return 0;
}

Let us compile and run the above program, this will produce the following result −

Contents of list before sort operation
1
4
2
5
3
Contents of list after sort operation
1
2
3
4
5

list.htm

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