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What is the time complexity of the algorithm for finding the shortest path in a graph using Dijkstra's algorithm?
The time complexity of Dijkstra's algorithm for finding the shortest path in a graph is O(V2) with a simple implementation using an adjacency matrix, or O((V E) log V) with a more efficient implementation using a priority queue.
What is the runtime complexity of Dijkstra's algorithm for finding the shortest path in a graph?
The runtime complexity of Dijkstra's algorithm for finding the shortest path in a graph is O(V2) with a simple implementation using an adjacency matrix, or O((V E) log V) with a more efficient implementation using a priority queue.
What is the fastest algorithm for finding the shortest path in a graph?
The fastest algorithm for finding the shortest path in a graph is Dijkstra's algorithm.
What are the key differences between the Floyd-Warshall and Dijkstra algorithms for finding the shortest path in a graph?
The key difference between the Floyd-Warshall and Dijkstra algorithms is their approach to finding the shortest path in a graph. Floyd-Warshall algorithm: It is a dynamic programming algorithm that calculates the shortest path between all pairs of vertices in a graph. It is efficient for dense graphs with negative edge weights but has a higher time complexity of O(V3), where V is the number of vertices. Dijkstra algorithm: It is a greedy algorithm that finds the shortest path from a single source vertex to all other vertices in a graph. It is efficient for sparse graphs with non-negative edge weights and has a lower time complexity of O(V2) with a priority queue implementation.
When does Dijkstra's algorithm fail to find the shortest path in a graph?
Dijkstra's algorithm fails to find the shortest path in a graph when the graph has negative edge weights.
