Hot Topics Data Structure Dequeue Dequeue stands for doubly ended queue which is a version of normal queue but here we can insert or delete elements from both front and end of the queue. Operations on Dequeue pushFront() – to add element to the front of queue pushRear() – to add element at […]
Hot Topics Data Structure Intution We know that stack is data structure that follows the LIFO method where as queue is a data structure that follows FIFO method.So can we use stacks in such a way so that the stack instead of following LIFO follows FIFO. Algorithm 1. Take two stacks s1 ans s2
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Hot Topics Data Structure Queue using Linked List As we have seen previously in queue we use two pointers front and rear where front denotes the first element and rear the last element in queue. push():To push element in queue we need to add a new node after the rear pointer and point the rear
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Hot Topics Data Structure Queue using array Algorithm Create an array of size n. Initialize two variable qfront and rear as 0 which tells us that the queue is empty. qfront gives us the index of the first element and rear gives the index till which the element is stored To push an element in
Hot Topics Data Structure Introduction to Queue Queue is a linear data structure that is open on both ends and follows First In First Out(FIFO) principle i.e the element inserted in queue at first will be the element removed or popped out of queue at first.For example when we stand in a queue to buy
Hot Topics Data Structure Convert Infix to Postfix Problem: Given an infix expression in the form of string str. Convert this infix expression to postfix expression. Infix expression: The expression of the form a op b. When an operator is in-between every pair of operands. Postfix expression: The expression of the form a b op.
Hot Topics Data Structure Stack Using Doubly Linked List Intution: We know stack follow LIFO principle.A node of doubly linked list holds the address of previous node,data of that node and the address of next node.So when the stack is empty and we are inserting the first node we have to point the previous part
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Hot Topics Data Structure A linked list is data structure that has two parts, one in which the data is stored and another in which that address of next data is stored.So here we are going to perform the operations of stack using linked list. The head of the linked list is considered to be the
Hot Topics Output: Displaying the elements in stack 1 4 2 3 Top element of the stack is: 1. Deleted element is: 1 Displaying the elements in stack 4 2 3 Top element of stack after removing one element is: 4 Data Structure Stack using Queue Stack is data structure which follows Last In First
Hot Topics Data Structure Stack using array: Algorithm We know stack is a normal array which follows LIFO.So to create stack we will need an array,the size of the array and a variable which will determine the top element of stack. push():To push element into stack we need to make sure that there is atleast
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