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@shklnrj shklnrj/flatten.rb

Created May 20, 2016
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def flatten(input)
result = Array.new
input.each do |element|
if element && element.instance_of?(Array)
# if the current element is an array then recursively flatten that
# array and add that array to the result
result = result+flatten(element)
else
# else this is just a regular element and add the element to result
result << element
end
end
return result
end
input = [[1,2,[3]],4]
print flatten(input)
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