t7ans - CS3230 Tutorial 7 1. Consider the following...

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Unformatted text preview: CS3230 Tutorial 7 1. Consider the following undirected graph. G = ( V,E ), where the set of vertices is { 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 } , and the edges and their weights are given as follows: wt (1 , 2) = 3, wt (1 , 5) = 2, wt (1 , 4) = 10, wt (2 , 3) = 4, wt (2 , 5) = 9, wt (3 , 5) = 6, wt (3 , 6) = 5, wt (4 , 5) = 4, wt (4 , 7) = 4, wt (5 , 6) = 3, wt (5 , 7) = 6, wt (5 , 8) = 2, wt (5 , 9) = 6, wt (6 , 9) = 6, wt (7 , 8) = 8, wt (7 , 10) = 3, wt (8 , 9) = 8, wt (8 , 10) = 3, wt (8 , 11) = 5, wt (8 , 12) = 7, wt (9 , 12) = 4, wt (10 , 11) = 5, wt (11 , 12) = 2 (a) Use Prim’s algorithm to find a minimal spanning tree for the graph. Start with node 1. Ans: The edges are picked in the following order by the Prim’s algorithm. (In some cases, there are choices to be made due to equal weights of the edges/distance for the vertices; ties were broken arbitrarily in the following). (1 , 5), (5 , 8), (1 , 2), (5 , 6), (8 , 10), (7 , 10), (2 , 3), (4 , 5), (8 , 11), (11 , 12), (9 , 12) are the edges chosen. I am omitting the table for D and Rem....
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This note was uploaded on 01/06/2012 for the course CS 3230 taught by Professor Sanjay during the Fall '10 term at National University of Singapore.

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t7ans - CS3230 Tutorial 7 1. Consider the following...

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