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gstark/simple-fun-sum-groups.rb

Created August 28, 2018 13:14
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simple-fun-sum-groups.rb
def sum_groups(arr)
loop do
chunks = arr.chunk(&:even?).map(&:last)
return arr.length if chunks.all? { |list| list.size == 1 }
arr = chunks.map(&:sum)
end
end
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