In C++ STL (Standard Template Library), a set is a container that stores unique elements in a sorted order. In this article, we will learn how to replace a specific element in a set in C++.

Example:

Input:
Initial Set: 10 20 30 
// Replace 20 with 25

Output:
Modified Set: 10 25 30

Replace Specific Element in a Set in C++

In C++, we can easily replace a specific element in a set by removing the old element using the std::set::erase() function and then insert the new element using the std::set::insert() function.

Syntax

set_name.erase(value_to_replace); // Erase the old element
set_name.insert(new_value); // Insert the new element

C++ Program to Replace Specific Element in a Set

Below is the Implementation of the above approach:

Initial Set: 10 20 30 
Modified Set: 10 25 30 

Time Complexity: O(logN)
Space Complexity: O(1)

Note: The new element may not be placed in the same position as set elements are sorted in some order.