Category Archives: GBlog

Software Framework vs Library

Many of us will be unaware of this difference which is really important to understand during development. The possible answer to this question, if asked, will be “Framework is a collection of various libraries”. However, this definition is not entirely true. “Who calls whom” i.e. the caller/callee relationship defines the difference between the two terms.… Read More »

Asymptotic Analysis and comparison of sorting algorithms

It is a well established fact that merge sort runs faster than insertion sort. Using asymptotic analysis we can prove that merge sort runs in O(nlogn) time and insertion sort takes O(n^2). It is obvious because merge sort uses a divide-and-conquer approach by recursively solving the problems where as insertion sort follows an incremental approach.… Read More »

A Group chat application in Java

In this post, a group chat application using MulticastSocket (Java Platform SE 7) class is discussed. A MulticastSocket is a (UDP) DatagramSocket, with additional capabilities for joining “groups” of other multicast hosts on the internet. Implementation Save the file as GroupChat.java and compile it using javac and then run the program using two command line… Read More »

Jar files in Java

A JAR (Java Archive) is a package file format typically used to aggregate many Java class files and associated metadata and resources (text, images, etc.) into one file to distribute application software or libraries on the Java platform. In simple words, a JAR file is a file that contains compressed version of .class files, audio… Read More »

Working with zip files in Python

This article explains how one can perform various operations on a zip file using a simple python program. What is a zip file? ZIP is an archive file format that supports lossless data compression. By lossless compression, we mean that the compression algorithm allows the original data to be perfectly reconstructed from the compressed data.… Read More »

Real-Time Edge Detection using OpenCV in Python

The objective of the program given is to perform edge detection of images in real-time. In this article, the popular canny edge detection algorithm is used to detect a wide range of edges in images. OpenCV has in-built function cv2.Canny() which takes our input image as first argument and its aperture size(min value and max… Read More »

Working with csv files in Python

This article explains how to load and parse a CSV file in Python. First of all, what is a CSV ? CSV (Comma Separated Values) is a simple file format used to store tabular data, such as a spreadsheet or database. A CSV file stores tabular data (numbers and text) in plain text. Each line… Read More »

GET and POST requests using Python

This post discusses two HTTP (Hypertext Transfer Protocol) request methods  GET and POST requests in Python and their implementation in python. What is HTTP? HTTP is a set of protocols designed to enable communication between clients and servers. It works as a request-response protocol between a client and server. A web browser may be the client,… Read More »

Socket Programming in C/C++

What is socket programming? Socket programming is a way of connecting two nodes on a network to communicate with each other. One socket(node) listens on a particular port at an IP, while other socket reaches out to the other to form a connection. Server forms the listener socket while client reaches out to the server.… Read More »

How to prepare for Infosys – The Complete guide

This article provides an insight of “how to prepare for infosys” from beginning to end. Question Paper Structure Online Test.( Duration – 95 Minutes.) Three Sections. Sectional Cut-off applied, No Negative marking. Sections are to be completed one by one, can’t switch in between. Auto saved once stipulated time is up for each section. Can… Read More »