All Medium Articles

Find Circles and Ellipses in an Image using OpenCV | Python

To identify circles, ellipses, or in general, any shape in which the pixels are connected we use the SimpleBlobDetector() function of OpenCV. In non-technical terms,… Read More

Image-Processing

OpenCV

Python-OpenCV

Python

Python | Thresholding techniques using OpenCV | Set-1 (Simple Thresholding)

Thresholding is a technique in OpenCV, which is the assignment of pixel values in relation to the threshold value provided. In thresholding, each pixel value… Read More

Image-Processing

OpenCV

Python-OpenCV

Python

Chat application between two processes using signals and shared memory

Prerequisite: C signal handling, IPC through shared memory A signal is used in the UNIX system to notify a process that a particular event has… Read More

cpp-multithreading

C++

Linux-Unix

Python | Get last N elements from given list

Accessing elements in a list has many types and variations. These are an essential part of Python programming and one must have the knowledge to… Read More

Python list-programs

Python

Python Programs

Python | Slider widget in Kivy

Kivy is a platform independent GUI tool in Python. As it can be run on Android, IOS, linux and Windows etc. It is basically used… Read More

Python-gui

Python-kivy

Python

Download file from URL using PHP

In this article, we will see how to download & save the file from the URL in PHP, & will also understand the different ways… Read More

PHP-Questions

PHP

Web Technologies

Python | Thresholding techniques using OpenCV | Set-2 (Adaptive Thresholding)

Prerequisite: Simple Thresholding using OpenCV In the previous post, Simple Thresholding was explained with different types of thresholding techniques. Another Thresholding technique is Adaptive Thresholding.… Read More

Image-Processing

OpenCV

Python-OpenCV

Python

Choose X such that (A xor X) + (B xor X) is minimized

Given two integers A and B. The task is to choose an integer X such that (A xor X) + (B xor X) is the… Read More

Bitwise-XOR

Bit Magic

DSA

Mathematical

Check for balanced parentheses in an expression | O(1) space | O(N^2) time complexity

Given a string str containing characters ‘(‘, ‘)’, ‘{‘, ‘}’, ‘[‘ and ‘]’, the task is to determine if brackets are balanced or not. Brackets… Read More

Constructive Algorithms

C++ Programs

Competitive Programming

DSA

Mathematical

Strings

How to select and upload multiple files with HTML and PHP, using HTTP POST?

In this article, we will look at how to upload multiple files with HTML and PHP. Multiple image upload allows the user to select multiple… Read More

Picked

PHP

PHP Programs

Web Technologies

Bellman Ford Algorithm (Simple Implementation)

We have introduced Bellman Ford and discussed on implementation here.Input: Graph and a source vertex src Output: Shortest distance to all vertices from src. If there… Read More

Shortest Path

DSA

Dynamic Programming

Graph

Misc

Kth largest node among all directly connected nodes to the given node in an undirected graph

Given two arrays u and v, representing a graph such that there is an undirected edge from u[i] to v[i] (0 ? v[i], u[i] <… Read More

Arrays

Data Structures

DSA

Graph

Sorting

Personal Voice Assistant in Python

As we know Python is a suitable language for script writers and developers. Let’s write a script for Personal Voice Assistant using Python. The query… Read More

Project

Python

Python Programs

School Programming

Technical Scripter

m-Way Search Tree | Set-2 | Insertion and Deletion

Insertion in an m-Way search tree: The insertion in an m-Way search tree is similar to binary trees but there should be no more than… Read More

m-way search tree

Advanced Data Structure

Data Structures

DSA

Tree

Find the largest Complete Subtree in a given Binary Tree

Given a Binary Tree, the task is to find the size of largest Complete sub-tree in the given Binary Tree. Complete Binary Tree – A Binary… Read More

Binary Tree

Complete Binary Tree

DSA

Tree

Lex Program For checking a valid URL

Problem: Write a Lex program for checking a valid URL. Explanation: Lex is a computer utility that generates some lexical analyzers. Lex reads a stream… Read More

Lex program

Compiler Design

Computer Subject

Lex program for Decimal to Binary Conversion

Problem: Write a Lex program for Decimal to Binary conversion. Explanation: FLEX (Fast Lexical Analyzer Generator) is a tool/computer program for generating lexical analyzers (scanners… Read More

Lex program

Compiler Design

History of Python

Python is a widely used general-purpose, high-level programming language. It was initially designed by Guido van Rossum in 1991 and developed by Python Software Foundation.… Read More

python-basics

Python

Index of kth set bit in a binary array with update queries

Given a binary array arr[] and q queries of following types: k: find the index of the kth set bit i.e. kth 1 in the… Read More

BIT

Segment-Tree

Advanced Data Structure

Arrays

Data Structures

DSA

Tree

Largest even number that can be formed by any number of swaps

Given an integer N in the form of string, the task is to find the largest even number from the given number when you are… Read More

frequency-counting

DSA

Mathematical

Sorting

Strings