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Leaves - Alice #19

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Leaves - Alice #19

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26 changes: 24 additions & 2 deletions lib/possible_bipartition.rb
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Original file line number Diff line number Diff line change
@@ -1,4 +1,26 @@

def possible_bipartition(dislikes)
raise NotImplementedError, "possible_bipartition isn't implemented yet"
doggos = []
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Love the variable names :p


dislikes.length.times do |i|
if doggos[i].nil?
doggos[i] = 1
end

return false if helper(i, doggos, dislikes) == false
end

return true
end

def helper(i, doggos, dislikes)
dislikes[i].each do |neighbor|
if doggos[neighbor].nil?
doggos[neighbor] = -doggos[i]
return false if helper(neighbor, doggos, dislikes) == false
elsif doggos[neighbor] == doggos[i]
return false
end
end

return true
end