Class: Stack

Inherits:
Object
  • Object
show all
Defined in:
lib/data_structures/stack.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Stack

Returns a new instance of Stack.



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# File 'lib/data_structures/stack.rb', line 2

def initialize
  @store = Array.new
end

Instance Method Details

#<<(el) ⇒ Object 



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# File 'lib/data_structures/stack.rb', line 32

def <<(el)
  @store << el
end

#==(other_stack) ⇒ Object 



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# File 'lib/data_structures/stack.rb', line 18

def ==(other_stack)
  return false unless other_stack.is_a?(Stack)
  @store == other_stack.send(:store)
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/data_structures/stack.rb', line 23

def empty?
  @store.empty?
end

#include?(el) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/data_structures/stack.rb', line 48

def include?(el)
  @store.include?(el)
end

#inspect ⇒ Object 



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# File 'lib/data_structures/stack.rb', line 14

def inspect
  @store
end

#length ⇒ Object 



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# File 'lib/data_structures/stack.rb', line 44

def length
  @store.length
end

#peek ⇒ Object 



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# File 'lib/data_structures/stack.rb', line 40

def peek
  @store.last
end

#pop ⇒ Object 



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# File 'lib/data_structures/stack.rb', line 36

def pop
  @store.pop
end

#push(el) ⇒ Object 



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# File 'lib/data_structures/stack.rb', line 27

def push(el)
  @store.push(el)
  self
end

#to_a ⇒ Object 



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# File 'lib/data_structures/stack.rb', line 6

def to_a
  Array.new(@store)
end

#to_s ⇒ Object 



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# File 'lib/data_structures/stack.rb', line 10

def to_s
  @store
end