Python Articles - Page 621 of 1048

When it is required to reverse a specific set of elements in a linked list, a method named ‘reverse_list’ is defined. This iterates through the list, and reverses the specific set of elements.Below is a demonstration for the same −Example Live Democlass Node:    def __init__(self, data):       self.data = data       self.next = None class LinkedList_structure:    def __init__(self):       self.head = None       self.last_node = None    def add_vals(self, data):       if self.last_node is None:          self.head = Node(data)          self.last_node ... Read More

When it is required to find the number of occurences of all the elements of a linked list, a method to add elements to the linked list, a method to print the elements and a method to find the occurrence of all elements in the linked list are defined.Below is a demonstration for the same −Example Live Democlass Node:    def __init__(self, data):       self.data = data       self.next = None class LinkedList_structure:    def __init__(self):       self.head = None       self.last_node = None    def add_vals(self, data):       ... Read More

When it is required to find the common element that occurs for the first time between two linked lists, a method to add elements to the linked list, and a method to get the common element that occurs for the first time in these linked lists is defined.Below is a demonstration for the same −Example Live Democlass Node:    def __init__(self, data):       self.data = data       self.next = None class LinkedList_structure:    def __init__(self):       self.head = None       self.last_node = None    def add_vals(self, data):       if ... Read More

When it is required to add the corresponding elements of specific position in two linked lists, a method to add elements to the linked list, a method to print the elements of the linked list, and a method to add elements to corresponding positions of a linked list are defined. Two lists instances are created and the previously defined method is called on these linked list instances.Below is a demonstration for the same −Example Live Democlass Node:    def __init__(self, data):       self.data = data       self.next = None class LinkedList_structure:    def __init__(self):     ... Read More

When it is required to find the largest element in a doubly linked list, a method to add elements to the doubly linked list, a method to print the elements of the doubly linked list, and a method to find the largest element in a doubly linked list are defined.Below is a demonstration for the same −Example Live Democlass Node:    def __init__(self, data):       self.data = data       self.next = None       self.prev = None class DoublyLinkedList_structure:    def __init__(self):       self.first = None       self.last = None ... Read More

When it is required to detect a cycle in a linked list, a method to add elements to the linked list, and a method to get the element in the linked list are defined. Another method is defined that checks if the head and rear values are same or not. Based on this result, cycles are detected.Below is a demonstration for the same −Exampleclass Node:    def __init__(self, data):       self.data = data       self.next = None class LinkedList_structure:    def __init__(self):       self.head = None       self.last_node = None ... Read More

When it is required to check if two linked lists are same, a method to add elements to the linked list, and a method to check the equality of the elements in the linked lists are defined.Below is a demonstration for the same −Exampleclass Node:    def __init__(self, data):       self.data = data       self.next = None class LinkedList_structure:    def __init__(self):       self.head = None       self.last_node = None    def add_vals(self, data):       if self.last_node is None:          self.head = Node(data)     ... Read More

When it is required to implement a binary tree data structure using a linked list, a method to set the root node, a method to perform in-order traversal, to insert element to the left of the root node, a method to insert element to the right of the root node, and a method to search the values are defined.Below is a demonstration for the same −Example Live Democlass BinaryTree_structure:    def __init__(self, key=None):       self.key = key       self.left = None       self.right = None    def set_root(self, key):       self.key = ... Read More

When it is required to implement a queue data structure using a linked list, a method to add (enqueue operation) elements to the linked list, and a method to delete (dequeue operation) the elements of the linked list are defined.Below is a demonstration for the same −Example Live Democlass Node:    def __init__(self, data):    self.data = data    self.next = None class Queue_structure:    def __init__(self):       self.head = None       self.last = None    def enqueue_operation(self, data):       if self.last is None:          self.head = Node(data)     ... Read More

When it is required to implement a stack data structure using a linked list, a method to add (push values) elements to the linked list, and a method to delete (pop values) the elements of the linked list are defined.Below is a demonstration for the same −Example Live Democlass Node:    def __init__(self, data):       self.data = data       self.next = None class Stack_structure:    def __init__(self):       self.head = None    def push_val(self, data):       if self.head is None:          self.head = Node(data)       else: ... Read More