Created
October 19, 2016 18:29
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class Flattner | |
def initialize | |
@res_arr = [] | |
end | |
def flatten_ary ary | |
unwind(ary) | |
@res_arr | |
end | |
def unwind input_ary | |
input_ary.each do |el| | |
if el.class.eql?(Array) | |
unwind(el) | |
else | |
@res_arr << el | |
end | |
end | |
end | |
end |
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require 'test/unit' | |
require '[change_to_proper_path]/flattner' | |
class TestFlattner < Test::Unit::TestCase | |
def test_flattner_empty_ary | |
flattner = Flattner.new | |
ary = [] | |
assert_equal flattner.flatten_ary(ary), [] | |
end | |
def test_flattner_flat_ary | |
flattner = Flattner.new | |
ary = [1,2,3,4,5,6,7,8,9] | |
assert_equal flattner.flatten_ary(ary), [1,2,3,4,5,6,7,8,9] | |
end | |
def test_flattner_full_ary | |
flattner = Flattner.new | |
ary = [1,2,[3],4,[5,[6,[7,8]]],9] | |
assert_equal flattner.flatten_ary(ary), [1,2,3,4,5,6,7,8,9] | |
end | |
end |
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