Recent questions tagged shortest-path

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1

Bellmann Ford Algorithm
Consider following with respect to directed graph where there can be positive,negative edge weights but no negative edge cycle. S1 : The Bellmann Ford algorithm will compute correctly the shortest path from source vertex S to every other Vertex. S2 : The Floyd Warshall ... pair of Verices. Which of Following statements are Correct ? A. Only S1 B. Only S2 C. Both D. None

asked Oct 20 in Algorithms by Na462 Loyal (6.9k points) | 36 views

+1 vote

1 answer

2

How Bellman ford is dynamic programming?

asked Aug 3 in Algorithms by Sandy Sharma Active (1k points) | 78 views

+1 vote

0 answers

3

shortest path algo
TRUE / FALSE Explain Please.. An undirected graph is said to be Hamiltonian if it has a cycle containing all the vertices. Any DFS tree on a Hamiltonian graph must have depth V − 1.

asked Jul 31 in Algorithms by Rishav Kumar Singh Active (4.4k points) | 50 views

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4

Space Complexity of Dijkastra's algorithm

asked Jul 5 in Algorithms by Hardik Maheshwari (81 points) | 155 views

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1 answer

5

Regarding the complexity of Bellman-Ford ?

asked Jun 1 in Algorithms by kilopavan (11 points) | 59 views

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2 answers

6

#Algorithm Bellman Ford uses which algorithm design technique

asked May 17 in Algorithms by iarnav Loyal (9k points) | 118 views

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7

Equality of shortest path tree for given node as a root and

asked Mar 24 in Programming by GateAspirant999 Active (2.7k points) | 51 views

+1 vote

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8

algorithm

asked Dec 31, 2017 in Algorithms by nikkey123 Active (1.5k points) | 52 views

0 votes

1 answer

9

shortest path
Read the following statements below For all the below questions consider the graph as simple and has positive weight edges. (i) Let the cost of the shortest path between two nodes is S.If the weight of every edge in the graph is doubled then weight of the ... We can use Kruskal's algorithm to find Minimum spanning tree of a directed graph . How many of the above statements are true.

asked Dec 13, 2017 in Algorithms by VIKAS TIWARI Junior (589 points) | 167 views

+5 votes

2 answers

10

Shortest path - bellman ford and floyd warshall

asked Dec 10, 2017 in Algorithms by Tuhin Dutta Loyal (8.3k points) | 607 views

+2 votes

2 answers

11

Dijkstra Algorithm

asked Dec 5, 2017 in Algorithms by Parshu gate Active (5k points) | 310 views

–1 vote

1 answer

12

Dijkstra algorithm

asked Nov 29, 2017 in Computer Networks by Parshu gate Active (5k points) | 219 views

0 votes

0 answers

13

Open Shortest Path First

asked Nov 28, 2017 in Computer Networks by Parshu gate Active (5k points) | 91 views

+2 votes

2 answers

14

Testbook Test
(1). Both BFS and DFS require $\Omega (N)$ storage for their operation. (2). If we double the weight of every edge in the Graph shortest path between any two vertices will not change. Which of the following is/are True ? (and in every question of shortest path we have to think about negative weight ?)

asked Nov 7, 2017 in Algorithms by Mr_22B Active (1.1k points) | 270 views

+2 votes

1 answer

15

Bellman Ford
A pseudo code for Bellman Ford where each edge is relaxed k times where k>=1. Let the graph G be a simple connected and undirected graph . Let number of vertices be V, and number of edges be E . int i=1; for( i=1;i<=k;i++) { For each edge (u,v) ... . (ii) For proper running of the algorithm k can be equal to V-1. (iii) For proper running of the algorithm k must be equal to E.

asked Nov 6, 2017 in Algorithms by shaurya vardhan Active (2.2k points) | 135 views

+1 vote

0 answers

16

Bellman Ford Algorithm (Edge sequence and convergence of algo.)

asked Nov 3, 2017 in Algorithms by Chhotu Boss (11.4k points) | 212 views

+3 votes

0 answers

17

Shortest Path
First Statement is true. But I don't know about second?

asked Nov 2, 2017 in Algorithms by Shivam Chauhan Loyal (8.9k points) | 147 views

+6 votes

0 answers

18

Dijkstra's
I know that Dijkstra's Doesn't work for Negative weight cycle because it form a loop, Does it also true that it may or may not work for negative weight edge(without cycle) ? If it is not working for a negative weight edge(without cycle) give some example to prove it.

asked Oct 12, 2017 in Algorithms by junaid ahmad Loyal (9.1k points) | 341 views

0 votes

2 answers

19

dijkstra
If we run Dijkstra’s algorithm to find single source shortest path for the above edge weighted directed graph with ‘8’ as source. In what order do the nodes get included into the set of vertices for which the shortest path distances are finalized.

asked Sep 14, 2017 in Algorithms by Warlock lord Active (3.4k points) | 169 views

+1 vote

0 answers

20

How many simple path from u to v going through w?

asked Sep 9, 2017 in Graph Theory by Hemant Parihar Boss (15.4k points) | 146 views

+1 vote

2 answers

21

Shortest Path Algorithms
For a given undirected weighted graph G with V number of vertices, if you want to find all pair shortest paths then which one of the following is true ? a) run dijkstra's shortest path algorithm only once. b) run dijkstra's shortest path algorithm V times. What if the given graph is directed ?

asked Jun 26, 2017 in Algorithms by Abhisek Saha (129 points) | 219 views

+1 vote

1 answer

22

Shortest path
I have 2 doubts below, each can be True or False? a) Dijkstra's Algo will terminate even if there is a -ve edge or -ve cycle. b) At the termination of Bellman Ford, even if graph has -ve cycle, a correct shortest path is found for a vertex for which shortest path is well-defined.

asked May 8, 2017 in Algorithms by Shyam Singh 1 Active (1.5k points) | 293 views

+2 votes

3 answers

23

Bellman Ford Shortest path
Is the below statement correct: Bellman Ford finds all negative weight cycles in the graph. This is true or false?

asked Apr 7, 2017 in Algorithms by Bongbirdie Junior (727 points) | 376 views

+2 votes

1 answer

24

Bellman Ford
If there is a negative edge cycle present in a graph, we all know that Bellman Ford has the capability to detect it. My doubt is that, even after the presence of a negative weighted cycle, will Bellman Ford Algorithm give the correct answer or it will simply say NO..shortest path cannot be computed!?

asked Apr 7, 2017 in Algorithms by Bongbirdie Junior (727 points) | 195 views

+1 vote

1 answer

25

#Totally Confused# please tell Using Dijkstra Algorithm solve shortest path algorithm from A to D.

asked Apr 6, 2017 in Computer Networks by LavTheRawkstar Active (5.2k points) | 184 views

0 votes

0 answers

26

Calculate the shortest path using TSP Greedy Appraoch

asked Mar 26, 2017 in Algorithms by LavTheRawkstar Active (5.2k points) | 98 views

0 votes

2 answers

27

Ace Test Series

asked Jan 14, 2017 in Algorithms by Vignesh Kamath (263 points) | 202 views

+3 votes

1 answer

28

shortest path
Let P be a shortest path from some vertex s to some other vertex t in a directed graph. If the weight of each edge in the graph is increased by one, P will still be a shortest path from s to t. T/F

asked Dec 6, 2016 in Algorithms by Debashish Deka Veteran (57.4k points) | 279 views

+1 vote

3 answers

29

Find shortest path

asked Nov 27, 2016 in Algorithms by Rakesh K Active (1.9k points) | 612 views

0 votes

2 answers

30

Bellman-ford

asked Nov 6, 2016 in Algorithms by vaishali jhalani Loyal (5.9k points) | 561 views

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