The circular queue works in the following manner: However, in a circular queue, the size is limited and insertion and deletion become much more efficient. In a normal queue, there will be non-usable space after a few insertions and deletions. The circular queue solves the limitations of the normal queue. lete Time and Space complexity of Operations on Queue built using Linked ListĪ circular queue is an extension of the regular queue data structure where the last element is connected to the first element. To delete an entire queue built using a linked list, we set the head and tail references to None and free up the memory space. ![]() #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
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