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Hi Chris, I'm trying to do with with the color method and BFS but it's not working. Can you take a look and leave some comments? Thanks

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Hey Margaret,

This is almost perfect, but for one small error in a place neither of us looked at closely. It took me over an hour to figure it out. As usual it's in the last place you'd look. Take a look at my suggestion and see if you agree.

You have to do something with the return value of bfs.

q = []
cur = index
q << cur

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I would add the starting point of this BFS' color to compat and then use compat[elem] throughout instead of static colors.

end
compat = {}
dislikes.each_with_index do |neighbors, index|
bfs(dislikes, compat, index)

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You are actually not doing anything with the return value for bfs. So... maybe:

Suggested change
bfs(dislikes, compat, index)
unless bfs(dislikes, compat, index)
return false
end

q << elem
end
end
end

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Suggested change
end
end
return true

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2 participants