All Hard Articles

TCS Digital Interview Experience 2019 (Through CodeVita)

Hello Geeks. I solved only 1 problem in CodeVita 2019 and 3 of my problems passed partial test cases so I was directly called for… Read More

Marketing

TCS

TCS Digital

TCS-interview-experience

Experiences

Interview Experiences

Perl – Attributes in Object Oriented Programming

In Perl, Object Oriented concept is very much based on references and Arrays/Hashes. The few main terms of object-oriented programming with respect to Perl programming… Read More

Picked

Perl

Check if two nodes are on same path in a tree | Set 2

Given two nodes of a binary tree v1 and v2, the task is to check if two nodes are on the same path in a… Read More

interview-preparation

LCA

Samsung

Competitive Programming

Data Structures

DSA

Placements

Tree

Count quadruplets(A, B, C, D) till N such that sum of square of A and B is equal to that of C and D

Given a number N, the task is to find the number of quadruples such that a2 + b2 = c2 + d2 where (1 <=… Read More

cpp-map

HashTable

maths-perfect-square

Arrays

Competitive Programming

DSA

Mathematical

Sum of all divisors from 1 to N | Set 3

Given a positive integer N, the task is to find the sum of divisors of all the numbers from 1 to N.Examples: Input: N =… Read More

divisibility

divisors

Natural Numbers

number-theory

C++ Programs

Competitive Programming

DSA

Mathematical

Pattern Searching

Flutter – Wrap Widget

Wrap widget aligns the widgets in a horizontal and vertical manner. Generally, we use Rows and Columns to do that but if we have some… Read More

Flutter

Dart

Ways to apply an if condition in Pandas DataFrame

Pandas provides several methods to apply the if condition to a DataFrame, and the choice of method depends on the complexity of the condition and… Read More

Python pandas-dataFrame

Python-pandas

Python

Splash Screen in Flutter

Splash Screen is the first screen that we see when we run our application. It is also known as Launch Screen. We will implement three… Read More

Dart

Rive animations in Flutter

Rive is a very useful animation tool that can create beautiful animations and we can add these in our Application. In flutter, we can add… Read More

Dart

How to Make USB Rubber Ducky at Home?

USB Rubber ducky is an HID device that looks similar to a USB Pen drive. It may be used to inject keystroke into a system,… Read More

How To

Python program to convert any base to decimal by using int() method

Given a number and its base, the task is to convert the given number into its corresponding decimal number. The base of number can be… Read More

Python function-programs

Python-Built-in-functions

Python

Python Programs

How to Create a Programming Language using Python?

In this article, we are going to learn how to create your own programming language using SLY(Sly Lex Yacc) and Python. Before we dig deeper… Read More

Compiler Design

Computer Subject

Python

Aspect Ratio Calculator using PyQt5

In this article we will see how we can create a aspect ratio calculator using PyQt5. The aspect ratio of an image is the ratio… Read More

PyQt-exercise

Python-gui

Python-PyQt

Python

Python – seaborn.PairGrid() method

Prerequisite: Seaborn Programming Basics Seaborn is a Python data visualization library based on matplotlib. It provides a high-level interface for drawing attractive and informative statistical… Read More

AI-ML-DS With Python

Python-Seaborn

AI-ML-DS

Data Visualization

Draw Dot Patterns Using Turtle in Python

Prerequisite: Turtle Programming Basics Turtle is an inbuilt module in Python. It provides drawing using a screen (cardboard) and turtle (pen). To draw something on… Read More

Python-turtle

Python

Check if a graph is Strongly, Unilaterally or Weakly connected

Given an unweighted directed graph G as a path matrix, the task is to find out if the graph is Strongly Connected or Unilaterally Connected… Read More

Algorithms

Arrays

Articles

C Programs

C++

C++ Programs

DSA

Engineering Mathematics Questions

Experiences

Graph

Interview Experiences

Java

Mathematical

Matrix

Pattern Searching

Placements

Project

Puzzles

Python

Maximum cost path in an Undirected Graph such that no edge is visited twice in a row

Given an undirected graph having N vertices and M edges and each vertex is associated with a cost and a source vertex S is given.… Read More

Algorithms-Graph Traversals

DFS

Algorithms

Arrays

DSA

Dynamic Programming

Graph

Greedy

Recursion

Count of numbers upto N digits formed using digits 0 to K-1 without any adjacent 0s

Given two integers N and K, the task is to count the numbers up to N digits such that no two zeros are adjacents and… Read More

number-digits

Algorithms

Combinatorial

Competitive Programming

DSA

Dynamic Programming

Mathematical

Recursion

Fork and Join Constructs in Concurrency

Prerequisite – Process Synchronization Fork : The fork instruction is the that instruction in the process execution that produces two concurrent executions in a program.… Read More

Process Synchronization

Operating Systems

Count of distinct index pair (i, j) such that element sum of First Array is greater

Given two arrays a[] and b[], both of size N. The task is to count the number of distinct pairs such that (a[i] + a[j]… Read More

Arrays

Competitive Programming

DSA

Mathematical