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Decrypt PDF using Java

We can Decrypt any PDF using Java by using the external library PDFBox. We can Decrypt and remove the Access Permission from any PDF using… Read More

Java

Java Programs

Encrypt and Decrypt Image using Java

Encryption is the process of converting information or data into a secrete code, especially to prevent unauthorized access. In these cases also we will do… Read More

Java

Java Programs

Abstraction by Parameterization and Specification in Java

Abstraction by Parameterization and specification both are important methods in Java. We do this in hope of simplifying our analysis by separating attributes and details… Read More

Java-Object Oriented

Java

java.util.concurrent Package

Java Concurrency package covers concurrency, multithreading, and parallelism on the Java platform. Concurrency is the ability to run several or multi programs or applications in… Read More

Java-concurrent-package

Java-Packages

Java

Java Program To Find Largest Between Three Numbers Using Ternary Operator

Java offers a lot of Operators and one such operator is the Ternary Operator. It is a linear replacement for an if-else statement. Thus, it… Read More

Java

Java Programs

Java Program to Extract Last two Digits of a Given Year

As the name suggests where there is an execution to be operated required to deal with digits of the number, the modulo operator plays a… Read More

Java

Java Programs

Java Program to Create a New File

A File is an abstract path, it has no physical existence. It is only when “using” that File that the underlying physical storage is hit.… Read More

java-file-handling

Java-Files

Java

Java Programs

How to Print a Collection in Java?

Collection is a set of objects that hold references to other objects in the program. In doing the same we already have studied a data… Read More

Java-Collections

Java

Java Programs

Evaluate the Value of an Arithmetic Expression in Reverse Polish Notation in Java

Reverse Polish ‘Notation is postfix notation which in terms of mathematical notion signifies operators following operands. Let’s take a problem statement to implement RPN Problem… Read More

Java

Java Programs

Reduce string by removing outermost parentheses from each primitive substring

Given a string S of valid parentheses “(“ and “)”, the task is to print the string obtained by removing the outermost parentheses of every… Read More

frequency-counting

substring

DSA

Mathematical

Searching

Strings

Count distinct strings possible by replacing each character by its Morse code

Given an array of strings arr[], the task is to count the number of distinct strings that can be generated from the given array by… Read More

cpp-set

frequency-counting

DSA

Strings

Data Visualisation in Python using Matplotlib and Seaborn

It may sometimes seem easier to go through a set of data points and build insights from it but usually this process may not yield… Read More

AI-ML-DS With Python

Python Data Visualization

Python-matplotlib

Python-Seaborn

AI-ML-DS

Data Visualization

How to create a Splash Screen using Tkinter?

Python offers multiple options for developing a GUI (Graphical User Interface). Out of all the GUI methods, tkinter is the most commonly used method. It… Read More

Python-tkinter

Python

What are the Alternatives of Servlet?

Pre-requisite – Introduction to Servlet Servlets are the Java programs that run on the Java-enabled web server or application server. They are used to handle… Read More

Java

Frequency of a substring in a string | Set 2

Given a string str of length N and a substring pattern of length M, the task is to find the frequency of occurrences of pattern… Read More

frequency-counting

regular-expression

strings

substring

C++

C++ Programs

Competitive Programming

DSA

Pattern Searching

Searching

Strings

TCS Digital Interview Experience 2020

Round 1: TCS conducted an aptitude and verbal reasoning test on 3rd Oct 2020. The next day on 4th Oct, a coding round was conducted.… Read More

TCS

TCS Digital

TCS-interview-experience

Experiences

Interview Experiences

Minimum cost required to connect all houses in a city

Given a 2D array houses[][] consisting of N 2D coordinates {x, y} where each coordinate represents the location of each house, the task is to… Read More

Kruskal'sAlgorithm

Minimum Spanning Tree

MST

Arrays

DSA

Graph

Greedy

Sorting

K distant prime pairs in a given range

Given two integers L, R, and an integer K, the task is to print all the pairs of Prime Numbers from the given range whose… Read More

cpp-unordered_map

number-theory

Prime Number

sieve

DSA

Hash

Mathematical

Comparison between Tarjan’s and Kosaraju’s Algorithm

Tarjan’s Algorithm: The Tarjan’s Algorithm is an efficient graph algorithm that is used to find the Strongly Connected Component(SCC) in a directed graph by using… Read More

Algorithms-Graph Traversals

DFS

graph-connectivity

Technical Scripter 2020

Advanced Data Structure

Algorithms

DSA

Graph

Stack

Technical Scripter

Time-Space Trade-Off in Algorithms

In this article, we will discuss Time-Space Trade-Off in Algorithms. A tradeoff is a situation where one thing increases and another thing decreases. It is… Read More

Algorithms

Analysis of Algorithms

Articles

Data Structures

DSA

DSA Quiz