Class: Zadt::Stack

Inherits:
Object
  • Object
show all
Defined in:
lib/zadt/AbstractDataTypes/StackQueue/Stack.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Stack

Returns a new instance of Stack.



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# File 'lib/zadt/AbstractDataTypes/StackQueue/Stack.rb', line 3

def initialize
  @values = Array.new
end

Class Method Details

.help ⇒ Object 



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# File 'lib/zadt/AbstractDataTypes/StackQueue/Stack.rb', line 7

def self.help
  Zadt::ADT::show_stack_help_message
end

Instance Method Details

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/zadt/AbstractDataTypes/StackQueue/Stack.rb', line 36

def empty?
  @values.empty?
end

#help ⇒ Object 



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# File 'lib/zadt/AbstractDataTypes/StackQueue/Stack.rb', line 11

def help
  Stack.help
end

#length ⇒ Object 



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# File 'lib/zadt/AbstractDataTypes/StackQueue/Stack.rb', line 32

def length
  @values.length
end

#peek ⇒ Object 



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# File 'lib/zadt/AbstractDataTypes/StackQueue/Stack.rb', line 28

def peek
  @values.last
end

#pop ⇒ Object 



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# File 'lib/zadt/AbstractDataTypes/StackQueue/Stack.rb', line 24

def pop
  @values.pop
end

#push(val) ⇒ Object 



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# File 'lib/zadt/AbstractDataTypes/StackQueue/Stack.rb', line 19

def push(val)
  @values.push(val)
  @values
end

#show ⇒ Object 



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# File 'lib/zadt/AbstractDataTypes/StackQueue/Stack.rb', line 15

def show
  @values
end