Floyd warshall algorithm Study guides, Class notes & Summaries

How do you tell if a graph has negative edges? - ANSWER-when fitting graph on a table, if the number of moves decreases the w() from edge to edge, then there is a negative edge; check from 1 to n Why are all pairs Dist(y,z) n^2? - ANSWER-Because it builds a two dim table! What is the run time of bellman ford algorithm? How about if you had to do it for all edges? - ANSWER-O(nm) O(n^2m) Floyd-Warshall run time? - ANSWER-O(n^3) What is the base case for the bellman ford algorithm? - ANSWE...

DFS outputs - ANSWER-pre array, post array, ccnum array, prev array BFS outputs - ANSWER-dist array, prev array Explore outputs - ANSWER-visited array. When to use Dijkstra's? - ANSWER-Works for both directed and undirected graphs. Must have only non-negative edge weights. Dijkstra's outputs - ANSWER-dist array, prev array Dijkstra's runtime? - ANSWER-O((n+m) log n) log n is from using the min heap (to get the lowest cost weight) When to use Bellman Ford? - ANSWER-Use when there is a ...

DFS outputs - Answer-pre array, post array, ccnum array, prev array BFS outputs - Answer-dist array, prev array Explore outputs - Answer-visited array When to use Dijkstra's? - Answer-Use on both directed and undirected graphs to find the shortest path from a source vertex to all other reachable vertices in the graph. Must have only non-negative edge weights. Dijkstra's outputs - Answer-dist array, prev array Dijkstra's time complexity - Answer-O((n+m) log n) log n is from using the m...

Question: 01. Which type of connectivity is required for VPLS? a) full mesh b) partial mesh c) star d) bus e) ring Answer: a) full mesh Question: 02. EIGRP uses which algorithm to build a routing table? a) Dijkstra's algorithm b) Floyd-Warshall algorithm c) Diffusing Update Algorithm d) Johnson's algorithm Answer: c) Diffusing Update Algorithm Question: 03. What is the purpose of an OTV edge device? a) connect to other data centers b) con...

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