Priority queue is a container in C++ STL (Standard Template Library) that allows insertion and removal of elements in a sorted manner, where the elements with highest priority comes first. It is implemented using heap data structure.

Examples of priority_queue include maintaining the best K elements in a stream of data or finding the shortest path in a graph using Dijkstra's algorithm.

Below are some code examples of using priority_queue in C++:

1. Creating an empty priority queue of integers:

2. Inserting elements into priority queue:

3. Removing highest priority element from priority queue:

4. Setting custom comparator function for priority queue:

header file in C++ STL library.

Examples of priority_queue include maintaining the best K elements in a stream of data or finding the shortest path in a graph using Dijkstra's algorithm.

Below are some code examples of using priority_queue in C++:

1. Creating an empty priority queue of integers:

#includeusing namespace std; priority_queue pq;

2. Inserting elements into priority queue:

// using push() method pq.push(10); pq.push(20); pq.push(30); // using emplace() method pq.emplace(40);

3. Removing highest priority element from priority queue:

int highest = pq.top(); pq.pop();

4. Setting custom comparator function for priority queue:

// sorting elements in descending order priority_queuePriority queue is included in the, greater > pq;

Frequently Used Methods

Frequently Used Methods

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