34 lines
571 B
Ruby
34 lines
571 B
Ruby
# This file contains the Ruby code from book of
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# "Data Structures and Algorithms
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# with Object-Oriented Design Patterns in Ruby"
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# by Bruno R. Preiss.
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#
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# Copyright (c) 2004 by Bruno R. Preiss, P.Eng. All rights reserved.
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module DequeMethods
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abstractmethod :enqueueHead
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abstractmethod :dequeueHead
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abstractmethod :head
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abstractmethod :enqueueTail
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abstractmethod :dequeueTail
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abstractmethod :tail
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end
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class Deque < Queue
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def initialize
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super
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end
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alias_method :queueHead, :head
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include DequeMethods
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alias_method :head, :queueHead
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end |