Expression contains redundant bracket or not
Note: Expression may contain any of these ‘+‘, ‘*‘, ‘–‘, and ‘/‘ operators. Given expression is valid and there are no white spaces present. Examples: Input: “((a+b+c))” Output: YES Explanation:...
Reversing the First K Elements of a Queue
Problem Statement: You are given a queue of integers and an integer value K. Your task is to reverse the first K elements of the queue, leaving the rest of...
Reverse a Number using Stack
A stack is a type of linear data structure that follows a specific order for performing operations. The sequence can either be Last In First Out (LIFO) or First In...
Check Mirror in N-ary Tree
Problem Statement: You are given 2 N-ary trees. You have to determine whether the 2 trees are mirror images of each other or not. You have to print “true” if...
Delete consecutive same words in a sequence
Problem statement Given an array of strings, if two consecutive strings are the same they will destroy each other. Your task is to find the number of remaining strings from...
Count natural numbers whose all permutation are greater than that number
Problem statement Given a number n, you have to find the count of all such numbers that satisfies the following condition: For any number x, all the permutations of x...
Tracking the Current Maximum Element in the Stack
Problem Statement: You will be given a stack of integer values. You have to keep a track of the maximum value in the stack. For instance, the element that is...
Stack Permutations (Check if an Array is Stack Permutation of Another)
Problem Statement: You will be given 2 arrays. You have to tell whether the 2 arrays are stack permutations of each other or not. Basically, there will be 2 input...
Iterative Method to find Ancestors of a Given Binary Tree
Problem Statement: Given a Binary Tree, you need to find all the ancestors of a particular node of that binary tree. You will be given the value that is stored...
Largest rectangular Area in Histogram – Set 2
Problem Statement You will be given an array that represents a histogram. The values of the array represent the height of the bars of the histogram and the width of...
Merge Overlapping Intervals
Problem Statement You will be given an array of time intervals that will be in any random order. You have to merge all the overlapping intervals and print only the...
Iterative Postorder Traversal | Set 2 (Using One Stack)
Problem Statement: You are given a binary tree. Your task is to print the postorder traversal of the binary tree using just 1 stack. Example Consider the tree given below....
Find Maximum Sum Possible Equal Sum of Three Stacks
Problem Statement You are given three stacks, you need to find the maximum sum possible of the three stacks. You are only allowed to remove the top of the stack....
Program for Tower of Hanoi
Problem statement In the Tower of Hanoi problem you are given three rods (“Source”, “Destination”, “Auxiliary”) and n disks. Initially, all the disks are stacked on the source rod in...
Reverse a String using a Stack
Problem Statement You are given a string, and your task is to reverse the string using a stack data structure. Input: String. Output: Reversed string. Test cases: Input: “Prepbytes” Output:...
Print Ancestors of a Given Binary Tree Node without Recursion
Problem statement You are given a binary tree and a key node. Your task is to print all the ancestors of the given key node. Input: Root of the binary...
Cognizant GenC Interview Questions – Set-2(Technical Interview Questions)
Cognizant is a multinational technology company based in the United States specializing in business consulting, information technology, and outsourcing. The company's headquarters are in Teaneck, New Jersey. Cognizant is a...
Data Structures in Java | Queue | Heap
Data structure refers to a collection of data with well-defined operationsIn this article, we’ll be discussing Data structures in Java, The term data, behaviour, or properties. A data structure is...
Data Structures in Java | Array | Linked List | Stack
Introduction: Data structures in Java are an essential aspect of Computer Science. There are different types of data structures that help us store the data in different ways in the...
How To Implement Queue Using Doubly Linked List In C
Queues are basic data structures that are used extensively in computer science and programming. They adhere to the First-In-First-Out (FIFO) principle, making them ideal for data management in situations where...
Data Structures Using C | Array | Linked List | Stack
What are Data structures using C? Data structure is a storage that is used to store and organize data. It is a way of arranging data on a computer so...
Data Structures Using C | Queue | Heap
A data structure is not only used for organizing the data. It is also used for processing, retrieving, and storing data. There are different basic and advanced types of data...
DBMS Interview Questions | Set 2 | Top 10 Theory Questions
DBMS stands for Database management System. DBMS is a software which is used to manage databases. It is used to insert, delete, update and retrieve data from the database by...
How To Delete In Doubly Linked List In C
In this article, we will discuss the deletion in a doubly linked list in c. If you would like to ace the data structures and algorithms easily, then you are...
How To Insert In A Doubly Linked List In C
Welcome to our comprehensive guide on "Insertion in Doubly Linked Lists in C." Doubly linked lists are fundamental data structures used to store and manage collections of elements in a...
Cognizant GenC Interview Questions – Set-3(HR Interview Questions)
This article will discuss the Cognizant Genc Interview Questions (HR). If you would like to ace the Human Resource section easily, then you are at the right place! Cognizant GenC...
Road Map To Learn Data Structures and Algorithms(DSA)
In the journey of programming, every programmer comes across a point where they want to solve a problem in a more efficient way. While finding a way out of this,...
Why Data Structures and Algorithms are so important for interviews ?
In this Article, we will be discussing why every programmer should learn Data Structures and Algorithms. This article helps those who just started data structures and algorithms and wondered how...
Data Structures Using C – Trees & Graph
Welcome to the world of advanced data structures. This article on Trees & Graphs in C programming will dive deep into essential concepts that form the backbone of modern computer...
Most Common MCQs Questions for Data Structures and Algorithms
Data structures and algorithms are fundamental concepts in computer science and play a crucial role in designing efficient and effective computer programs. They provide a systematic way to organize and...