Skip to content

Gopi Gorantala

I'm Gopi — 15+ years in Java, building Kafka and Flink platforms for banks, where one lost event is a financial discrepancy. I write javahandbook.com because the guides I needed didn't exist. Everything here is tested against a real cluster first.

What Are Data Structures And Algorithms?

In this lesson, you will gain knowledge about the significance and correlation between data structures and algorithms.

Who Is This Course For?

This course deep-dives into each of the data structures and algorithms in computer science

Members only

Leetcode 704: Binary Search

In this lesson, you will learn two popular searching algorithms developers use all the time to search for an element in an array.

How Learning DSA Will Improve Your Coding Skills?

This lesson will teach you how DSA will help you find a job at top tech companies and fast-paced startups.

Members only

Array In-Place Algorithm: Reverse Array

In this lesson, you will learn how to modify the input array to save some space.

Members only

What Are Dynamic Arrays? How Do They Differ From Traditional Arrays?

This article is a continuation of the "Introduction to array data structure" and contains sketches, memory diagrams, strengths and weaknesses with examples.

Members only

How To Convert Array To Dynamic Array?

In this lesson, you will learn how to resize a static array. Most of the advanced and complex data structures are built on arrays.

How To Prevent cannot read property map of undefined

The "cannot read property map of undefined" error occurs when we try to call the map method on a variable that stores an undefined or null value.

How To Prevent cannot read property map of undefined

Single Responsibility Principle: Strengths and Weaknesses

Though SRP is the first fundamental design principle, it has its own advantages and disadvantages.

How can I remove a specific item from an array in JavaScript?

Removing a specific item from an array is the most use case a developer runs into. You will learn more than 7 ways to achieve this.

How can I remove a specific item from an array in JavaScript?