Data Structures Resources
Artificial Intelligence
How have Quantum Computers Replaced Classical Computers
History of Computing Machines
The history of computers is a long and complex one. It started with the invention of the first computer in 1822...
Algorithms
What is the stack data structure?
A data structure is a specialized storage format that retrieves and processes data to utilize the main memory efficiently. Array, Stack, Queue, Linked List,...
Pandas
pandas.read_pickle() method in Pandas
pandas.read_pickle() method from Pandas API (Application Programming Interface) is used to read pickled objects or other objects from files. This method is valuable when...
Artificial Intelligence
Cloud Based Quantum App Development: An In-Depth Guide
Nowadays, businesses rely on machine learning and big data analytics to predict their success. Cloud based quantum app development has changed the imagination of...
SQL
Indexes in SQL with examples
Indexes in SQL: the 'index' constraint in SQL is used to create an index table that decreases the time needed for search queries. Each...
R
R Lists: Create, Append, and Remove
A data structure is a specialized format for storing, retrieving, and processing data so that it can be used efficiently in the main memory....
Algorithms
Tree Traversals: Preorder, Postorder, Inorder
Tree traversals are used to traverse trees of different shapes. Traversal of a data structure means accessing the entire data stored in the data...
Algorithms
Searching Algorithms: Linear, Binary, Jump, and Interpolation Search
In programming, searching algorithms are used to retrieve information or data stored in a data structure. These are some of the most commonly used...
JavaScript
Mobile App Development For Small Businesses: The Ultimate Guide
Mobile application development is indispensable to expanding a small business to the entire world with limited resources. The business executive wants to switch online...
Java
What are Arrays of ArrayList in Java?
The ArrayList in java is a class of resizable array objects of various data types. It enables operations requiring memory utilisation to be carried...
R
Remove Rows and Columns of a Matrix in R
In R, a matrix is a collection of elements of the same data type (boolean, numeric, or character) arranged into a fixed number of...
R
What are casefold(), toupper() & tolower() functions in R
In the R Programming language, the functions casefold(), toupper() & tolower() are string functions used to change the case of letters in a string.
The...
Python
Switch Case in Python and Switch Statement Example
Switch Case in Python-- A switch case statement is a control structure in programming which allows programmers to control the flow of their programs...
SQL
How to use SQL DISTINCT and TOP in the single query
SQL stands for Structured Query Language It is a domain-specific programming language used to access and manipulate data stored in a relational database. Using...
NodeJS
Database URL parser in NodeJs – The Ultimate Guide
NodeJs is an open source JavaScript run time environment that uses the chrome V8 engine to execute JavaScript. It helps us run JavaScript code...
R
What is tidyr gather function in R?
If we need to gather a key-value pair from the specified columns then the gather() function in tidyr is used. It is deliberated as...
R
Vector Data Structure in R & How to Create Vectors
The R language is widely used in various fields like data science, scientific research, & statistical data analysis.
All of these fields deal with a...
NodeJS
How to import and export using module object in NodeJS
NodeJs is an open-source JavaScript run time environment using the chrome V8 engine to execute JavaScript. It helps us run JavaScript code outside of...
R
What is the outer function in R
An array is a collection of the same data type values stored at contiguous memory locations. The arrays in R Programming language support basic...
R
Pie Charts in R
Pie charts are circular graphs that show how different parts contribute to a whole. Pie charts are one of the most common visual representations...
R
How to plot histograms in R
A histogram is a category of bar chart that shows numerical data distribution. It provides a visual representation of the frequency of data. A...
Machine Learning
What is Gradient Descent Algorithm with example
The gradient descent algorithm is a first-order optimization algorithm used to find the local minima/maxima of a provided function.
In simpler words, it is a...
Python
Differences between del, remove, & pop in Python lists
Like most other programming languages, a list in python is a mutable data structure with an ordered sequence of elements. Each element or value...
Python
How to calculate area of triangle given the length of sides?
To apply any formula to calculate area of a triangle, one must know the value of at least one angle of the triangle. However,...
Automata Theory
What is Automata Theory?
Automata theory has numerous applications in computer science, artificial intelligence, and communication theory. In computer science, automata theory is used to model Turing machines...
R
What are Loops in R and their types?
Loops are among the fundamental concepts of computer programming. In its simplest form, a loop repeats the same things multiple times. One's can use...
Algorithms
What is LRU Caching?
Least Recently Used or LRU caching is one of the operating systems' most commonly used algorithms for page replacement. It is used in operating...
HTML
What is the Javascript HTML DOM?
HTML, CSS, and JavaScript are essential technologies for modern web development. By combining these technologies, web developers can create dynamic and interactive web applications....
NodeJS
How to connect Node.Js app with MySQL database?
Why use Node.Js?
Developers use Node.Js, a Javascript run time environment to write both server-side and client-side scripts in JavaScript.
MySQL
MySQL is a relational database management...
Machine Learning
What is Supervised Learning in Machine Learning?
Supervised Learning is a technique of artificial intelligence and mainly machine learning. It is defined by its use of labeled datasets to train algorithms...
Machine Learning
How to perform K means clustering using cluster.k_means() in scikit learn?
K-means clustering is a popular classification algorithm that has many applications in the real world. It works by initializing k number of centers (defined...
JavaScript
What is an instanceof operator in JavaScript?
In JavaScript, the operator namely instanceof is helpful to check the object’s type at run time. It returns true if the object is an...
JavaScript
Convert a string to array in Ruby using split method
The split() function can be used in Ruby to convert a string to an array by following the defined pattern. It is an easier...
JavaScript
Functions in JavaScript & JS Functions Types
A function is the most basic feature of any programming language. It adds the flavor of reusability within the code. Like you are finding...
JavaScript
What is Javascript typeof operator?
Consider you have created a page, in which you are taking input from the user and then providing output depending upon that input. Now...
Java
What is Math acos() function in java?
In java, the arccosine or inverse of cosine can be calculated by using java.lang.Math.acos() method. This method from the Math library returns the inverse...
Python
Essentials of Python – The Basics of Python 3.9
Every programming language has its own style like syntax and set of rules. If we talk about Python, it has its own essentials. For...
Java
How to find the absolute value in Java?
The absolute value of a real number is its positive value irrespective of its sign. In mathematics, absolute value of x is denoted by...
Java
How to use log1p() in java programming?
This log1p() function from java.lang.Math library is used to calculate the natural logarithm (base e) of the sum specified value and 1. It is...
Python
What is Python and why it is used?
Python is a programming language, which is used for the development of scalable and robust applications, data analysis, and data visualization. It is mostly...
R
What is the update() function in R?
This update() function is used to update outdated models or refit them(by default). It mainly involves getting the call, updating it, and evaluating it.
We use getCall() to extract...
Python
What is os.getpass() in Python?
The os.getpass() function in Python is used for security purposes. It allows user to type their password without echoing it. This means it does...
R
What is Ungroup() in R programming?
Ungroup() function in R programming is used in data management. It is used to ungroup the data from its grouped form. It is always...
Pandas
How to plot parallel coordinates chart in Pandas?
Parallel coordinates chart
Parallel coordinates chart is a graph used to plot individual data points parallel to different performance measures. It allows plotting high-dimensional data...
Algorithms
What is the Bellman-Ford Algorithm?
Bellman ford algorithm is a minimization algorithm used for encountering the shortest paths like Dijkstra’s Algorithm. It is also known as the single source...
Algorithms
What is Dijkstra’s Algorithm?
Dijkstra’s algorithm is a minimization algorithm that is used to find the shortest paths in a graph. It is also known as the single...
Bootstrap
How to align-right in bootstrap 4?
Bootstrap is an open-source CSS-based framework. It is designed in a way to make web development easier for the developers. That is why it...
Cyber Security
What are the pillars of information security?
Information security plays a key role in securing the data against any unauthorized access or alteration. Data leakage or any other security breach can...
