![]() #peek Function to return the topmost element Thus, we simply return the head node of the linked list, pointing to the beginning of the queue. The peek function returns the topmost element in a queue. #Creating Queue class using list linked list Then we initialize the “Queue” class which includes an instance of the linked list data structure. To create a queue using the linked list data structure, firstly we create the node and linked list class for our fundamental data structure. take significantly less amount of time to execute. The complexity of the data structure increases but operations such as insertion, deletion, traversal, etc. In python, we can implement a queue by using a linked list as its inclusive data structure. The space complexity is O(1) as well since no additional memory is required. The time complexity of creating a Queue using a list is O(1) as it takes a constant amount of time to initialize a list. Return ' '.join(values) Time and Space Complexity #Modifying the _str_ function to return the desired string version of Queue #Creating Queue class using list without size limit However, its implementation may become slower as the size of the list increases. We can use the in-built functions, append and pop, associated with lists. The advantage of using the list data structure to create the Queue is that it is easy to implement and the list can be limitless. When we create “_str_” function, it modifies the “_str_” function of python. We also create the “_str_” function of this class to return the string version of our queue in the desired order. Firstly, we create a queue class and initialize an “int” list inside the “Queue” class. The creation of Queue using the list data structure in python is a simple process. Queue creation using List without size limit ![]() deleteQueue – Removes all the data elements and free up the allocated memory space.isFull – The isFull method returns whether a queue is full or not, returns a boolean value of True if the queue is full, otherwise it returns False.isEmpty – The isEmpty method returns whether a queue is empty or not, returns a boolean value of True if the queue is empty, otherwise it returns False.Peek – Peek operation is used to retrieve the first element of the queue without deleting it.Data items are also removed from the beginning of the queue following the FIFO approach. ![]()
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