This is how the Dijkstra algorithm works.

It's a pathfinding method used to find the shortest route between nodes in a graph. 🗺️

1. Start at the source node.
2. Assign distance 0 to source, infinity to others.
3. Mark source as visited.
4. Select the unvisited node with the smallest distance.
5. Update neighbors' distances if a shorter path is found.
6. Repeat until all nodes are visited.

Key points:
- Greedy approach ✅
- No negative weights allowed ⚠️
- Time complexity: O((V + E) log V) 🕒

#Dijkstra #Algorithms #Pathfinding #ComputerScience #GraphTheory #TechEducation

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👩‍💻 heapq.merge(): Combining sorted data!

If you have multiple sources of data that are already sorted, you don't need to collect them into a single collection and sort them again. heapq.merge() combines such sources into a single, ordered iterator.

In this guide:
• We will combine multiple sorted sequences;
• We will explore lazy processing of large data sources;
• We will configure comparison using the key argument;
• We will combine data sorted in reverse order.

This is especially useful when working with logs, files, and query results, where each source already provides data in the correct order.

#Python #heapq #DataProcessing #CodingTips #Programming #Algorithms

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