Insert a node after the n-th node from the end
Introduction The linked list is one of the most important concepts and data structures to learn while preparing for interviews. Having a good grasp of Linked Lists can be a...
Make middle node the head in a linked list
In this blog, we will deep dive and discuss how to make the middle node head of a linked list. Making the middle node as the head node of the...
Reverse a stack without using extra space in O(n)
Problem Statement In this problem, we are given a stack. We have to reverse the stack without using extra space in O(n). Problem Statement Understanding As we know, reversing a...
Can we reverse a linked list in less than O(n)?
Introduction Reversing a linked list is a very common operation that we need to perform while solving problems on linked list. So, if this operation is used a lot, let's...
Generic Linked List in C
Introduction In this article, we will discuss in detail about generic linked list in C. Data Structures are very important in the interview for any IT firm. Practicing more and...
How to write C functions that modify the head pointer of a Linked List?
In the below article we are going to understand how we can modify a function in c. Lets just get into the approach to modify the head pointer in linked...
Practice problems for linked list and recursion
Introduction Assume the node of the linked list has the following structure: [TABS_R id=3541] Below are some recursive functions, try to explain their functionality: [TABS_R id=3537] Answer: The above function...
Merge Two Balanced Binary Trees
Introduction The linked list is one of the most important concepts and data structures to learn while preparing for interviews. Having a good grasp of Linked Lists can be a...
Extract the leaves of a Binary Tree in a Doubly Linked List
This blog gives the complete solution with an efficient approach for solving the famous coding problem “How To Extract Leaves Of A Binary Tree In A Doubly Linked List”. Extracting...
Convert a given Binary Tree to Doubly Linked List
This article will discuss in detail how to convert binary tree to doubly linked list. Conversion of binary tree to doubly linked list is an amazing task, which will improve...
Find the length of a loop in the linked list
In the realm of data structures, linked lists are foundational, offering dynamic memory allocation and efficient data manipulation. However, linked lists can occasionally contain loops or cycles, which disrupt their...
Bubble Sort On Doubly Linked List
Sorting is one of the famous techniques used to rearrange the array or the list of elements. In this article, we will learn how to sort a doubly linked list...
Top 30 Java Programming interview questions
Check if a given number is palindrome or not. Ans. A palindrome is a number which is when reversed give the same number. We find the reverse and check whether...
Top 50 Basic interview questions from C
What do you mean by dangling pointer? Ans. If a pointer is pointing to some address of a variable and at that moment another pointer is used to delete that...
Commonly asked interview questions on c
Why do we still use C? Isn’t it quite old? Ans. C is considered to be the mother of all modern-day languages. It was initially created for the purpose of...
Top 20 algorithm interview questions
Given an array of integers, find the indices of two numbers that sum up to the given target. For example – Arr[] = {1, 2, 4 -3, 7}, and target...
Linked list on C++
Linked List is a linear data structure which comprises of elements/nodes stored at various locations not necessarily contiguous. But don’t we have arrays for keeping a list? Well, there are...
Top 30 Wipro interview questions for freshers
In this tutorial, we will be discussing Wipro interview questions for freshers and experienced. If you have the talent, passion, and ability to work, able to work on cutting-edge technologies...
Practice java programs for interview
1. Write a program to swap two numbers in Java. Ans. Two ways to do this -with third variable and without third variable. public static void swapNumberswithtemp(int a, int b)...
Introduction to c language for beginners
C is a general-purpose procedural programming language developed by Dennis M. Ritchie. It was used to develop the UNIX operating system so you can understand how powerful it really is....
Top 30 java interview questions and answers for freshers
What is immutable object? Ans. Immutable objects can be created of immutable classes. Objects of these class cannot be modified. So whenever we try to change or modify these objects...
50 simple java programs for beginners
1. Write a program in Java to reverse a number. Ans. Extract each digit and keep multiplying with 10 and adding the remainder. static int REV(int n){ long RevNumber=0; while...
25 Most Important programming interview questions
1. What is the difference between procedural language and object-oriented language? Ans. Procedural Programming languages follow a sequence of instructions and conveys it to the computer. Procedural programming depends on...
How to crack coding interview
How to crack coding interview Whether you are a recent graduate or a job seeker, if you are searching for a job this article will help you to prepare yourself...
Why is Java a secure language?
Java is a highly well-known object-oriented programming language that was developed in 1972, but it has continued to be one of the most crucial languages for decades. As its competitors...
Find a Number
Concepts Used Binary Search Difficulty Level Easy Problem Statement : Finding a number has always been an interesting puzzle! Well in this problem we are given a sorted array of...
DELETE Kth NODE FROM THE END
This blog will give the detailed description to Delete Nth node from the end of the linked list. Deleting the Nth node from the end of the linked list will...
TOYS
Concepts Used DYNAMIC PROGRAMMING Difficulty Level Easy. Problem Statement : Once upon a time, Arya visited a toy store. As Arya is a small kid he is attracted to every...
FOOLISH ITEMS
CONCEPTS USED: Dynamic programming. DIFFICULTY LEVEL: Easy. PROBLEM STATEMENT(SIMPLIFIED): Arnab is now handed N rupees, he is asked by his mom to buy at least two ingredients which when used...
BALANCED PARENTHESIS COUNT
CONCEPTS USED: Recursion and Backtracking. DIFFICULTY LEVEL: Medium. PROBLEM STATEMENT(SIMPLIFIED): Rohan is now fond of balanced sequences, but suddenly he realized that he is in love with balanced parenthesis. Now...