This course is designed for someone who has a basic to no understanding of coding. The course intends to provide flavours of little bit of everything. There are also links to leetcode problems that you should solve. Leetcode problems are selected in a way to provide you familiarity with different data structures and algorithms. Please... Continue Reading →
Introduction to Software Engineering
This course is designed for someone who has a basic to no understanding of coding. The course intends to provide flavours of little bit of everything. There are also links to leetcode problems that you should solve. Leetcode problems are selected in a way to provide you familiarity with different data structures and algorithms. Week... Continue Reading →
Simple Explanation And Implementation Of Knuth-Morris-Pratt (KMP) Algorithm For String Search
Introduction We have seen brute force approach to string search here. Brute force approach to string search has time complexity of O(n*m). Donald Knuth and Vaughan Pratt, and James H. Morris conceived the algorithm in 1970. KMP algorithm is the first algorithm to have linear time complexity. Problem Statement We will assume text (where we... Continue Reading →
A beginner guide to Brute Force Algorithm for substring search
Introduction CONTROL + F or COMMAND + F How often do you use above keyboard shortcut? In fact, for most of us, searching a string or substring in a pile of strings/document is involuntarily action with the above key combination. This post will deal with the subject of the substring search. We will quickly define... Continue Reading →
A complete tutorial on Binary Tree
Introduction Figure 1 shows a Binary Search Tree. This post will start with the motivation of studying BST and gradually move to the related definitions. We will do some hands on coding for simple BST operations and we will end the post by analysing the drawbacks. Where do we use Binary Search Tree? Trees... Continue Reading →
Java Basic Tutorials
We had conducted a series of three online lectures for those who want to learn Java. These presentation were made for a beginner with no prior knowledge of java. Lectures were supported by online tests and a small project to get hands on knowledge. Please find the presentations that will help in jumpstarting the java... Continue Reading →
Dropwizard Tutorial : HTML Page Using Freemarker
Prerequisite Before you start this, Its good to follow the following articles. Running Rest API using Dropwizard Reading From Database Using Dropwizard Writing To Database Using Dropwizard I will assume that your dropwizard project is running. Dependency Add dependency of dropwizard-freemarker-views in your pom.xml Your pom.xml should look like this: https://gist.github.com/rohitsingh20122992/bc05fad912367fc094b3d86f0dbf1943 Freemarker Template Language Apache... Continue Reading →
Dropwizard : Write Data Into Database Using Hibernate
Please follow the first two part of the tutorial before starting this: Introduction To Dropwizard Read Data From Database Using Dropwizard Modify InfoDao To Persist Data Add a method to persist data https://gist.github.com/rohitsingh20122992/804fcb8d8278697b9bad67dc4d6eb596 Add POST API to store the info https://gist.github.com/rohitsingh20122992/ba92da47d24be1cbff32ea19106e92b9 Test Your API Run your project. Test using postman or any other rest client.... Continue Reading →
Dropwizard – Tutorial to write APIs to read/write from database using hibernate
Please go through the first part of this tutorial to set up your dropwizard project. For this project, we will assume you have a working dropwizard project. Add dependency to your pom.xml Please add dependency of hibernate and mySQL-connector to your pom.xml https://gist.github.com/rohitsingh20122992/b4256af30b3cecaf64e0454460c41d72 Create Info Table in MySql https://gist.github.com/rohitsingh20122992/eda65377e68f280758cea3ab54347486 Add some content to your table.... Continue Reading →
REST APIs using Dropwizard – Introductory Tutorial
Dropwizard is a popular java framework for restful service. It provides out of the box support for configuration, application metrics, logging and operational tools so the developers focus more on writing business logic and not on set ups. Agenda This tutorial should help you set up your dropwizard project and few APIs. Let's start! Create... Continue Reading →