In this post, I am discussing how we can create a simple API with Spring Boot. This post discusses about Repository, Controller/Resource and Model layer. Let’s get to it. 🚀 Prerequisite: Make sure you have Java 11 and maven installed. Head over to _start.spring.io_ from your favourite browser and create…

Coffee and software engineers match made in heaven, right? Well, that might be an overstatement but we have to agree that nothing beats a good cup of coffee to kick start your morning. We all have read, watched, and talked about our office setup with a cool keyboard, mouse, and…

Timsort was implemented by Tim Peters in 2002, it has been a standard sorting algorithm for Python since Python 2.3. Python’s sorted and list.sort function uses Tim sort. Java uses Timsort in JDK for sorting non primitive types. …

Shuffling cards is an essential part of every card game. There are many techniques for shuffling cards but overhand and riffle are the most popular ones. Overhand shuffle In this shuffle a set of cards are transferred from bottom of the deck to the top of the deck and the…

What happens when we run Arrays.sort() in Java? which sorting algorithm Java uses in background? Since Java 7 release back in 2011, default sorting algorithm used is DualPivotQuickSort which is an enhancement over classic quick sort algorithm. Dual pivot quick sort is a combination of insertion sort and quick sort…

Find duplicates inside a sorted array? This is an extension of problem we have discussed in an earlier post. I like this problem more because there iss more thinking involved and it forces us to write down the algorithm without using an extra space. …

In my last post I wrote about finding duplicates inside an array of integers. What if input is a string instead of integers? Could we solve the problem in same way we did before? String is essentially an array of characters so we still could use HashTable/ Set like before…

Whenever I prepare for the interviews I start with “Arrays and strings” and then move to Linkedlist, trees and eventually find myself lost in plethora of topics that I don’t know much about like Dynamic programming, Graphs etc. So here we go again, hopefully I get through most of them…

I personally gets excited and worried both at the same time when nodejs major version gets released. Node community sure do follow a very aggressive release cycles, almost every 6 month there’s a new release of Node. Unfortunately, I fall in the category of latecomers where I am working on…