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eduardopoleo/is_unique_with_array.rb

Last active August 17, 2017 12:22
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is_unique_with_array.rb
def unique_with_array(s)
char_set = Array.new
s.each_char do |char|
code = char.ord
return false if char_set[code]
char_set[code] = true
end
return true
end
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