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finished assignment #37

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13 changes: 6 additions & 7 deletions lib/queue.rb
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Original file line number Diff line number Diff line change
@@ -1,28 +1,27 @@
class Queue
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@CheezItMan CheezItMan Sep 28, 2020

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This all works, but isn't done with a circular buffer as assigned. So many of the methods end up with O(n) time complexity instead of O(1).


def initialize
# @store = ...
raise NotImplementedError, "Not yet implemented"
@store = Array.new
end

def enqueue(element)
raise NotImplementedError, "Not yet implemented"
@store << element
end

def dequeue
raise NotImplementedError, "Not yet implemented"
return @store.shift
end

def front
raise NotImplementedError, "Not yet implemented"
return @store[0]
end

def size
raise NotImplementedError, "Not yet implemented"
return @strore.length
end

def empty?
raise NotImplementedError, "Not yet implemented"
return @store.empty?
end

def to_s
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9 changes: 4 additions & 5 deletions lib/stack.rb
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Original file line number Diff line number Diff line change
@@ -1,19 +1,18 @@
class Stack
def initialize
# @store = ...
raise NotImplementedError, "Not yet implemented"
@store = LinkedList.new
end

def push(element)
raise NotImplementedError, "Not yet implemented"
@store.add_first(element)
end

def pop
raise NotImplementedError, "Not yet implemented"
@store.remove_first
end

def empty?
raise NotImplementedError, "Not yet implemented"
return @store.length == 0
end

def to_s
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