Adding Dijkstra's algorithm implementation in C++, using min-heap #344
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Add Dijkstra's algorithm implementation in C++, using a min-heap.
Description
This pull request adds an implementation of Dijkstra's algorithm using a min-heap (priority queue).
The algorithm finds the shortest paths from the source vertex to all other vertices in a weighted graph.
The implementation includes a sample test case which can be uncommented in the main function for demonstration purposes.