LogIn

Email

Password

Show Password

I don't have account.

Iterator

Iterator is an object that contains a countable number of values.

How can I iterate over a HashMap in Java?

Top Iterator Articles

How to iterate SortedList in C#

How to iterate SortedList in C# | How to iterate generic SortedList in C# | how to access each element in sorted list | loop on sorted list

How to iterate a Dictionary in C# ?

Learn efficient ways to iterate a Dictionary in C# using loops like foreach, for and LINQ for fast key-value access and better performance in your code.

Popular Topics

In databases, a query is a request to retrieve, insert, update or delete data. Written in SQL (Structured Query Language), queries can be simple, like fetching all rows from a table, or complex, involving joins, conditions and aggregations. They are essential for interacting with and managing database information efficiently.

A database is an organized collection of data. It is the collection of schemas, tables, queries, reports, views, and other objects. The data are typically organized to model aspects of reality in a way that supports processes requiring information. Use this tag if you have questions about designing a database.

Software Design

Software design is the process of planning and structuring a software system’s architecture, components, interfaces, and data flow to meet functional and non-functional requirements. It ensures scalability, maintainability and performance. Key approaches include modular design, object-oriented design and architectural patterns like MVC and microservices for efficient, reliable software development.

Coding Problems

Practice Coding Problems to boost your skill.

A method is a block of code that performs a task.

Language-Concepts

This tag is used to understand a basic part of the language.

Sorting Algorithms are designed to arrange element in accending or decending order.

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.

math tag that is used for mathematical operations

Popular Articles

Static Class vs Singleton in C#

Static Class vs Singleton in C#: A Complete Deep Dive

Merge Sorted Array

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.

Top High-Level Design(HLD) Interview Questions 2025

Top High-Level Design(HLD) Interview Questions and answers, HLD QnA, HLD interview preparation

List Handling in Java vs C# vs C++ – A Deep Comparison

List Handling in Java vs C# vs C++ A Deep Comparison, This comparison provides a full view java , c# and c++ List like data structures

Top 50 SQL Interview Questions and Answers (Beginner to Intermediate)

Top 50 SQL Interview Questions and Answers (Beginner to Intermediate). Top SQL Interview Questions for fresher. Frequently asked SQL interview questions with answers

How to Install and Run Docker on Amazon EC2 by yum

how to install docker on amazon ec2 instance. docker installation command on linux machine, docker commands, Commonly Used Docker Commands on EC2

MySQL installation in Docker

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.

Amazon Transaction Logs

Amazon Transaction Logs (example question), Amazon Transaction Logs Interview question

Maximum Product Subarray

Maximum Product Subarray, Find Maximum Product Subarray in an Array, Given an integer array arr, find a subarray that has the largest product,

Most Popular Tools

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

Create a blank canvas for your ideas, notes or sketches. Use this tool for rough work and jotting down your thoughts

QR Code Generator

A QR Code Generator is a tool that instantly converts text, URLs or other data into a scannable QR code. Users can create custom QR codes for websites, contact info or messages. It's commonly used for quick access, sharing and printing without needing a backend or complex setup.

Word Counter

Perform various string operations like counting characters, words or letters.

Collaborative Editor

Collab Editor is a powerful, free-to-use online platform that lets you collaborate in real-time. Whether you re working on documents, brainstorming idea, or discussing projects etc