Contents

class StackUnderflowError < RuntimeError
end

class StackOverflowError < RuntimeError
end

class Stack
  
  def initialize
    @items = []
  end
  
  def push object
    raise StackOverflowError if @items.length == 10
    @items.push object
  end
  
  def pop
    raise StackUnderflowError if @items.empty?
    @items.delete @items.last
  end
  
  def top
    raise StackUnderflowError if @items.empty?
    @items.last
  end
  
  def empty?
    @items.empty?
  end
  
  def size
    @items.length
  end
  
end

Version data entries

20 entries across 20 versions & 1 rubygems

Version	Path
rspec-0.5.1	examples/stack.rb
rspec-0.5.10	examples/stack.rb
rspec-0.5.11	examples/stack.rb
rspec-0.5.12	examples/stack.rb
rspec-0.5.0	examples/stack.rb
rspec-0.5.2	examples/stack.rb
rspec-0.5.3	examples/stack.rb
rspec-0.5.4	examples/stack.rb
rspec-0.5.5	examples/stack.rb
rspec-0.5.6	examples/stack.rb
rspec-0.5.7	examples/stack.rb
rspec-0.5.8	examples/stack.rb
rspec-0.5.9	examples/stack.rb
rspec-0.5.13	examples/stack.rb
rspec-0.5.14	examples/stack.rb
rspec-0.5.15	examples/stack.rb
rspec-0.5.16	examples/stack.rb
rspec-0.6.0	examples/stack.rb
rspec-0.6.1	examples/stack.rb
rspec-0.6.2	examples/stack.rb