Dictionaries

track which commands have been executed. Pop last

command off command stack to undo it.

get the size of the dict

Implementation of stacks

Lists, collection from deque and Queue.lifoQueue ​

• False

• True

used to insert the element at the end of the stack

​ ​ ​ Insertion and removal of the element has done at one end.

used to removed the topmost/last element of the stack.

used to get item on top of stack, without removing it.

Associative array, like java HashMap

used to remove the element from the queue

Add or update

Delete an items

Get length of the dict

Delete all items from the dict

are the operations of dictionaries

• True

• False

• ewan