Consequently, size of the queue increases by 1. writeln () if _name_ = '_main_' : main () #- # more tobe.txt # to be or not to - be - that - is # python arrayqueue.py < tobe.txt # to be or not to beĬopyright © 2000–2015, Robert Sedgewick, Kevin Wayne, and Robert Dondero. EnQueue(x): Adds a new element x from the rear side of the queue. def main (): q = Queue () while not stdio. A minus sign indicates pop (and # write to standard output), and any other string indicates push. _a + ' ' return s #- # Test the Queue class by reading strings from standard input and # pushing or popping as indicated. It is the same as Array except that its size. def _str_ ( self ): s = '' for i in range ( self. In C, the ArrayList is a non-generic collection of objects whose size increases dynamically. _count #- # Return a string representation of self. _a ) // 2 ) return item #- # Return the number of items in self. isEmpty (): raise Exception ( 'Queue underflow' ) item = self. Below is the implementation of the above-mentioned Queue operations using Doubly LinkedList in Python: Queue operations using doubly linked list queue elements are: 4->5->6->7-> first element is 4 Size of the queue is 4 After applying dequeue () two times queue elements are: 6->7-> queue is empty: False. _last = 0 #- # Remove the first item of self and return it. _count = 0 #- # Add item to the end of self. _count #- # Return True iff self is empty. create1D ( max, None ) for i in range ( self. def _resize ( self, max ): temp = stdarray. Queue in Python can be implemented by the following ways: list que queue.Queue. Pythons built-in List data structure comes bundled with methods to simulate both stack and queue operations. enqueue - adds an element to the end of the queue: dequeue - removes the element at the beginning of the queue: Stacks and Queues using Lists. _last = 0 # Index of last item #- # Resize the array stored within self such that it has # max elements. Its common for Stacks and Queues to be implemented with an Array or Linked List. create1D ( _INITIAL_COUNT, None ) # Items self. class Queue : #- # Construct an empty Queue object. _INITIAL_COUNT = 2 #- # A Queue object is a first-in-first-out collection. Number of elements in the queue -> Size Tail Head. #- # arrayqueue.py #- import stdarray import stdio #- # The initial number of elements in the array that is stored within # any Queue object. Declare a list of elements and maximum size of the Queue. Below is the syntax highlighted version of arrayqueue.py
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |