Challange
A challenge is a task, problem or situation that tests a person’s skills, knowledge or determination. Challenges encourage growth by pushing individuals beyond their comfort zones and inspiring creative problem-solving. In learning, technology and work environments, challenges help improve abilities, build confidence and lead to meaningful achievements through consistent effort and resilience.
Top Challange Articles
Top 50+ SQL Interview Questions and Answers for Intermediate to Advanced
Top SQL Interview Questions and Answers for Intermediate to Advanced. Top SQL Interview Questions for experience. Frequently asked SQL interview questions with answers
C# Interview Questions and Answers I
Prepare for your next tech c# interview with these top c# interview questions and expert answers. Boost your confidence and crack c# interview.
Container With Most Water
Container With Most Water | You are given an integer array height of length n. There are n vertical lines drawn such that the two endpoints of the ith line are (i, 0) and (i, height[i]). Find two lines that together with the x-axis form a container such that the container contains the most water.
Maximum Product of Three Numbers
Maximum product of a triplet (subsequence of size 3) in array | Maximum Product of Three Numbers | Given an integer array arr, find three numbers whose product is maximum and return the maximum product.
3 Sum : Find triplets that add up to a target value
3 Sum : Find triplets that add up to a target value, 3 sum problem , Triplet Sum in Array , Given an integer array nums, return all the triplets that add up to a target value
Find Minimum in Rotated Sorted Array
Find minimum Element in a Rotated Sorted Array. Given a rotated sorted array your task is to find the minimum element in that array. Find Minimum in Rotated Sorted Array. Given the sorted rotated array arr of unique elements return the minimum element of this array.
Check Whether Two Strings are Anagram of Each Others
Check whether two Strings are anagram of each other. Given two string s1 and s2 check whether the given strings are anagrams of each other or not. Check if two Strings are anagrams of each other. Valid Anagram
Next Permutation find next lexicographically greater permutation
next permutation : find next lexicographically greater permutation. The next permutation of an array of integers is the next lexicographically greater permutation of its integer. Given an array Arr[] of integers, rearrange the numbers of the given array so that they form the lexicographically next larger permutation of numbers.
Popular Topics
SQLInterviewLanguage-ConceptsApplication DesignSystem DesignJavaC#Artificial IntelligenceSystem Design InterviewCoding Problems
SQL stands for Structured query language. It is a programming language for storing and processing information in a relational database. It is standard language for accessing and manipulating databases.
A structured conversation where one participant asks questions and the other provides answers of those questions.
This tag is used to understand a basic part of the language.
Application design is the process of planning and structuring an application’s architecture, user interface, data flow and functionality to meet user and business requirements. It involves decisions on technology stack, design patterns, scalability and security. Good application design ensures performance, maintainability and a seamless user experience across platforms and devices.
System design is the process of defining the architecture, components, modules, interfaces and data flow of a system to meet specific requirements. It focuses on creating scalable, efficient and maintainable solutions, covering both high-level design (HLD) and low-level design (LLD). Essential for building reliable, high-performance software systems.
Java is a high-level object-oriented programming language. it's firstly released by Sun Microsystems in 1995. Use this tag when you're having queries using or understanding the language. This tag is also applicable to Java libraries and frameworks.
C# (C-Sharp) is a modern, object-oriented programming language developed by Microsoft for building secure, scalable applications. It runs on the .NET platform and supports features like strong typing, garbage collection, LINQ, async programming and cross-platform development. C# is widely used for web, desktop, game development (Unity), cloud services and enterprise-level software solutions.
Artificial Intelligence (AI) is the simulation of human intelligence in machines, enabling them to think, learn and make decisions. It powers systems to solve problems, recognize patterns, understand language and adapt over time. AI is used in various fields, including robotics, healthcare, finance and everyday applications like virtual assistants.
System Design Interview is a technical interview round where candidates design scalable, reliable and efficient software systems. It evaluates understanding of architecture, databases, APIs, scalability, load balancing, caching and real-world problem-solving to assess the ability to build large-scale applications.
Coding problems are exercises designed to test a programmer’s ability to write logic, solve challenges and apply algorithms or data structures. They help improve problem-solving skills, logical thinking and coding efficiency. Common in interviews and competitive programming, coding problems range from simple tasks to complex algorithmic challenges, preparing developers for real-world software development scenarios.
Popular Articles
Amazon Transaction Logs (example question), Amazon Transaction Logs Interview question
Rotate an array of n elements to the right by k steps | right rotate the elements of an array | array rotate | rotate array by k step
Top High-Level Design(HLD) Interview Questions and answers, HLD QnA, HLD interview preparation
Mastering the Singleton Design Pattern in C#, Singleton Design Pattern in Depth: Structure, Use Cases and Best Practices, in depth design pattern, LLD , low level design
install mysql by docker. docker mysql server installation. MySQL is one of the most popular open-source relational database management systems. Docker container is a great way to manage and deploy databases in a portable and isolated environment. In this article, we will walk through the steps by step to install and run MySQL in Docker.
how to install docker on amazon ec2 instance. docker installation command on linux machine, docker commands, Commonly Used Docker Commands on EC2
Find the Maximum Subarray Sum | Largest Sum Contiguous Subarray | Kadane’s Algorithm | Maximum Subarray | Given an integer array nums, find the
subarray with the largest sum and return its sum | The Efficient Way to Find Maximum Subarray Sum
Static Class vs Singleton in C#: A Complete Deep Dive
You are given two integer arrays arr1 and arr2, sorted in accending order, and two integers m and n, representing the number of elements in arr1 and arr2 respectively. Merge arr1 and arr2 into a single array sorted in accending order.
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Explore our top online tools including a blank page for notes, a QR code generator, word counter and collaborative editor. These free, easy-to-use utilities help you write, analyze, share and organize content faster. Perfect for developers, creators and students to streamline everyday digital tasks efficiently.
Blank Page
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QR Code Generator
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Collaborative Editor
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