15 lines
414 B
Matlab
15 lines
414 B
Matlab
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% Check whether a graph is a tree.
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% A tree is a connected graph with n nodes and (n-1) edges.
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% Source: "Intro to Graph Theory" by Bela Bollobas
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%
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% INPUTS: adjacency matrix, nxn
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% OUTPUTS: Boolean variable, 0 or 1
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%
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% Other routines used: isConnected.m, numEdges.m, numNodes.m
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% GB: last updated, Sep 24, 2012
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function S=isTree(adj)
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S=false;
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if isConnected(adj) && numEdges(adj)==numNodes(adj)-1; S=true; end
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