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Optimal Binary Search Tree | DP-24 | 19 Aug, 2021
Given a sorted array key [0.. n-1] of search keys and an array freq[0.. n-1] of frequency counts, where freq[i] is the number of searches for keys[i]. Construct a binary search tree of all keys such that the total cost of all the searches is as small as possible.Let us first define the cost of a BST. The c... | [
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"text": "Given a sorted array key [0.. n-1] of search keys and an array freq[0.. n-1] of frequency counts, where freq[i] is the number of searches for keys[i]. Construct a binary sear... |
Node.js vs Vue.js | 21 Oct, 2020
Node.js: It is a JavaScript runtime environment, which is built on Chrome’s V8 JavaScript engine. It is developed by Ryan Dahl who is a Software Engineer working at Google Brain, he also developed Deno JavaScript and TypeScript runtime. Node.js is cross-platform and open-source which executes JavaScript co... | [
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"text": "Node.js: It is a JavaScript runtime environment, which is built on Chrome’s V8 JavaScript engine. It is developed by Ryan Dahl who is a Software Engineer working at Google Bra... |
What is buffer in Node.js ? | 16 Aug, 2021
Pure JavaScript is great with Unicode encoded strings, but it does not handle binary data very well. It is not problematic when we perform an operation on data at browser level but at the time of dealing with TCP stream and performing a read-write operation on the file system is required to deal with pure ... | [
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"text": "Pure JavaScript is great with Unicode encoded strings, but it does not handle binary data very well. It is not problematic when we perform an operation on data at browser leve... |
Matplotlib.axes.Axes.twinx() in Python | 21 Apr, 2020
Matplotlib is a library in Python and it is numerical – mathematical extension for NumPy library. The Axes Class contains most of the figure elements: Axis, Tick, Line2D, Text, Polygon, etc., and sets the coordinate system. And the instances of Axes supports callbacks through a callbacks attribute.
The Axe... | [
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"text": "Matplotlib is a library in Python and it is numerical – mathematical extension for NumPy library. The Axes Class contains most of the figure elements: Axis, Tick, Line2D, Text... |
Shell Script to List Files that have Read, Write and Execute Permissions | 20 Apr, 2021
In this article, We will learn how to list all files in the current directory that have Red, Write and Execute permission.
Suppose, we have the following files in our current directory :
Here, We have a total of 8 files in our current directory. Out of 8, we have Read, Write and Execute permission on 6 fi... | [
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"text": "\n20 Apr, 2021"
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"text": "In this article, We will learn how to list all files in the current directory that have Red, Write and Execute permission."
},
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"s": 1... |
Java Program to add leading zeros to a number | To add leading zeros to a number, you need to format the output. Let’s say we need to add 4 leading zeros to the following number with 3 digits.
int val = 290;
For adding 4 leading zeros above, we will use %07d i.e. 4+3 = 7. Here, 3, as shown above, is the number with 3 digits.
String.format("%07d", val);
The following... | [
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"text": "To add leading zeros to a number, you need to format the output. Let’s say we need to add 4 leading zeros to the following number with 3 digits."
},
{
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"text": "int val = 290;"
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Sort 3 numbers | 23 Jun, 2022
Given three numbers, how to sort them?
Examples:
Input : arr[] = {3, 2, 1}
Output : arr[] = {1, 2, 3}
Input : arr[] = {6, 5, 0}
Output :arr[] = {0, 5, 6}
One simple solution is to use sort function.
C++
Java
Python3
C#
PHP
Javascript
// C++ program to sort an array of size 3#include <algorithm>#includ... | [
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"text": "Given three numbers, how to sort them?"
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"text": "Examples: "
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... |
Use of fflush(stdin) in C | 13 Sep, 2021
fflush() is typically used for output stream only. Its purpose is to clear (or flush) the output buffer and move the buffered data to console (in case of stdout) or disk (in case of file output stream). Below is its syntax.
fflush(FILE *ostream);
ostream points to an output stream
or an update stream in ... | [
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"text": "fflush() is typically used for output stream only. Its purpose is to clear (or flush) the output buffer and move the buffered data to console (in case of stdout) or disk (in ... |
Python | shutil.copyfileobj() method | 12 Oct, 2021
Shutil module in Python provides many functions of high-level operations on files and collections of files. It comes under Python’s standard utility modules. This module helps in automating process of chowning and removal of files and directories.shutil.copyfileobj() method in Python is used to copy the co... | [
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{
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"text": "Shutil module in Python provides many functions of high-level operations on files and collections of files. It comes under Python’s standard utility modules. This module helps... |
Producer-Consumer solution using Semaphores in Java | Set 2 | 20 Nov, 2019
Prerequisites – Semaphore in Java, Inter Process Communication, Producer Consumer Problem using Semaphores | Set 1
In computing, the producer–consumer problem (also known as the bounded-buffer problem) is a classic example of a multi-process synchronization problem. The problem describes two processes, the... | [
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"text": "Prerequisites – Semaphore in Java, Inter Process Communication, Producer Consumer Problem using Semaphores | Set 1"
},
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SQL Interview Questions | 18 Apr, 2022
1. What is SQL? SQL stands for Structured Query Language. It is a language used to interact with the database, i.e to create a database, to create a table in the database, to retrieve data or update a table in the database, etc. SQL is an ANSI(American National Standards Institute) standard. Using SQL, we ... | [
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"text": "1. What is SQL? SQL stands for Structured Query Language. It is a language used to interact with the database, i.e to create a database, to create a table in the database, to... |
Multiplication Algorithm in Signed Magnitude Representation | 21 Aug, 2019
Multiplication of two fixed point binary number in signed magnitude representation is done with process of successive shift and add operation.
In the multiplication process we are considering successive bits of the multiplier, least significant bit first.If the multiplier bit is 1, the multiplicand is copi... | [
{
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"s": 26,
"text": "\n21 Aug, 2019"
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"e": 197,
"s": 54,
"text": "Multiplication of two fixed point binary number in signed magnitude representation is done with process of successive shift and add operation."
},
{
"code": null,
... |
How to count values per level in a factor in R | 26 May, 2021
In this article, we will discuss how to count the values per level in a given factor in R Programming Language.
summary() method in base R is a generic function used to produce result summaries of the results of the functions computed based on the class of the argument passed. The summary() function produc... | [
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"text": "In this article, we will discuss how to count the values per level in a given factor in R Programming Language."
},
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MONTH() function in MySQL | 02 Dec, 2020
MONTH() function in MySQL is used to find a month from the given date. It returns 0 when the month part for the date is 0 otherwise it returns month value between 1 and 12.
Syntax :
MONTH(date)
Parameter :
This function accepts one parameter
date : The date or DateTime from which we want to extract the m... | [
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"code": null,
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"text": "MONTH() function in MySQL is used to find a month from the given date. It returns 0 when the month part for the date is 0 otherwise it returns month value between 1 and 12."
... |
Tryit Editor v3.7 | Tryit: HTML image - full URL | [] |
Playit | div#myBox { position:absolute; background-color:red; z-index:auto;} | [] |
PHP $argv | When a PHP script is run from command line, $argv superglobal array contains arguments passed to it. First element in array $argv[0] is always the name of script. This variable is not available if register_argc_argv directive in php.ini is disabled.
Following script is executed from command line.
Live Demo
<?php
var_d... | [
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"text": "When a PHP script is run from command line, $argv superglobal array contains arguments passed to it. First element in array $argv[0] is always the name of script. This variable is not available if register_argc_argv directive in php.ini is disabled."
... |
Copy all elements of ArrayList to an Object Array in Java | All the elements of an ArrayList can be copied into an Object Array using the method java.util.ArrayList.toArray(). This method does not have any parameters and it returns an Object Array that contains all the elements of the ArrayList copied in the correct order.
A program that demonstrates this is given as follows −
... | [
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"text": "All the elements of an ArrayList can be copied into an Object Array using the method java.util.ArrayList.toArray(). This method does not have any parameters and it returns an Object Array that contains all the elements of the ArrayList copied in the cor... |
How to remove Y-axis labels in R? | When we create a plot in R, the Y-axis labels are automatically generated and if we want to remove those labels, the plot function can help us. For this purpose, we need to set ylab argument of plot function to blank as ylab="" and yaxt="n" to remove the axis title. This is a method of base R only, not with ggplot2 pac... | [
{
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"text": "When we create a plot in R, the Y-axis labels are automatically generated and if we want to remove those labels, the plot function can help us. For this purpose, we need to set ylab argument of plot function to blank as ylab=\"\" and yaxt=\"n\" to remov... |
Implementing Recurrent Neural Network using Numpy | by Rishit Dholakia | Towards Data Science | Recurrent neural network (RNN) is one of the earliest neural networks that was able to provide a break through in the field of NLP. The beauty of this network is its capacity to store memory of previous sequences due to which they are widely used for time series tasks as well. High level frameworks like Tensorflow and ... | [
{
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"text": "Recurrent neural network (RNN) is one of the earliest neural networks that was able to provide a break through in the field of NLP. The beauty of this network is its capacity to store memory of previous sequences due to which they are widely used for time... |
Creating a Pop Music Generator with the Transformer | by Andrew Shaw | Towards Data Science | TLDR; Train a Deep Learning model to generate pop music. You can compose music with our pre-trained model here — http://musicautobot.com. Source code is available here — https://github.com/bearpelican/musicautobot.
In this post, I’m going to explain how to train a deep learning model to generate pop music. This is Part... | [
{
"code": null,
"e": 387,
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"text": "TLDR; Train a Deep Learning model to generate pop music. You can compose music with our pre-trained model here — http://musicautobot.com. Source code is available here — https://github.com/bearpelican/musicautobot."
},
{
"code": null,
"e": 545... |
Error connecting SAP while sapjco3.jar file is in my library path | You need to copy sapjco3.dll in a folder in your Java library path as he t library is not sapjco3.jar and it is a sapjco3.dll file.
You can call in your application usingfollowing:
System.getProperty("java.library.path")
Following approaches can be used:
First is by copying sapjco3.dll into one of the folder which are ... | [
{
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"text": "You need to copy sapjco3.dll in a folder in your Java library path as he t library is not sapjco3.jar and it is a sapjco3.dll file."
},
{
"code": null,
"e": 1243,
"s": 1194,
"text": "You can call in your application usingfollowing:"
... |
Set insert() in C++ STL | In this article we are going to discuss the set::insert() function in C++ STL, their syntax, working and their return values.
Sets in C++ STL are the containers which must have unique elements in a general order. Sets must have unique elements because the value of the element identifies the element. Once added a value ... | [
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"text": "In this article we are going to discuss the set::insert() function in C++ STL, their syntax, working and their return values."
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"code": null,
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"text": "Sets in C++ STL are the containers which must have uniqu... |
Java Program to generate random number with restrictions | To generate random number with resctrictions, here we are taking an example of a phone number from
India with the country code 91.
First, we have set the first 2 numbers i.e. the country code. The variables are declared for each digit. We have also fixed the first digit of the number as 9 after country code 91:
Random ... | [
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"text": "To generate random number with resctrictions, here we are taking an example of a phone number from\nIndia with the country code 91."
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"code": null,
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"text": "First, we have set the first 2 numbers i.e. the co... |
Angular PrimeNG Slider Component - GeeksforGeeks | 22 Aug, 2021
Angular PrimeNG is an open-source framework with a rich set of native Angular UI components that are used for great styling and this framework is used to make responsive websites with very much ease. In this article, we will know how to use the slider component in Angular PrimeNG.
Properties:
animate: It i... | [
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"text": "Angular PrimeNG is an open-source framework with a rich set of native Angular UI components that are used for great styling and this framework is used to make resp... |
Hazelcast - IMap | The java.util.concurrent.Map provides an interface which supports storing key value pair in a single JVM. While java.util.concurrent.ConcurrentMap extends this to support thread safety in a single JVM with multiple threads.
Similarly, IMap extends the ConcurrentHashMap and provides an interface which makes the map thre... | [
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"text": "The java.util.concurrent.Map provides an interface which supports storing key value pair in a single JVM. While java.util.concurrent.ConcurrentMap extends this to support thread safety in a single JVM with multiple threads."
},
{
"code": null,
... |
Longest Harmonious Subsequence in C++ | Suppose we have an integer array; we have to find the length of its longest harmonious subsequence among all its possible subsequences. As we know a harmonious sequence array is an array where the difference between its maximum value and its minimum value is exactly 1.
So, if the input is like [1,3,2,2,5,2,3,7], then t... | [
{
"code": null,
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"text": "Suppose we have an integer array; we have to find the length of its longest harmonious subsequence among all its possible subsequences. As we know a harmonious sequence array is an array where the difference between its maximum value and its minimum val... |
Facial Landmark Detection for Occluded Angled Faces | Towards Data Science | Facial landmarks detection or facial keypoints detection has a lot of uses in computer vision like face alignment, drowsiness detection, Snapchat filters to name a few. The most widely known model for this task is Dlib’s 68 keypoints landmark predictor which gives very good results in real-time. But the problem starts ... | [
{
"code": null,
"e": 605,
"s": 46,
"text": "Facial landmarks detection or facial keypoints detection has a lot of uses in computer vision like face alignment, drowsiness detection, Snapchat filters to name a few. The most widely known model for this task is Dlib’s 68 keypoints landmark predictor whi... |
How do we check if a String contains a substring (ignoring case) in Java? | The contains() method of the String class accepts Sting value as a parameter, verifies whether the current String object contains the specified String and returns true if it does (else false).
The toLoweCase() method of the String class converts all the characters in the current String into lower case and returns.
To f... | [
{
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"text": "The contains() method of the String class accepts Sting value as a parameter, verifies whether the current String object contains the specified String and returns true if it does (else false)."
},
{
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Predict IT Support Tickets with Machine Learning and NLP | by Garrett Eichhorn | Towards Data Science | Dealing with high volume IT service requests? Interested in reducing operational costs? Looking to elevate the user experience? Look no further.
This article serves as a guide for data science aficionados to deploy production-level Machine Learning solutions in the IT Service Management (ITSM) environment. The prescrib... | [
{
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},
{
"code": null,
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"s": 192,
"text": "This article serves as a guide for data sc... |
How to make the existing bootstrap 2 table responsive? - GeeksforGeeks | 29 Jul, 2020
Method 1:To make the table responsive on all viewport size, wrap the table within a opening and closing <div> tags, having class “table-responsive” within the opening <div> tag.Syntax:<div class="table-responsive">
<table class="table">
...
</table>
</div>
Example: The example describe the “table-r... | [
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"text": "Method 1:To make the table responsive on all viewport size, wrap the table within a opening and closing <div> tags, having class “table-responsive” within the open... |
K-means, DBSCAN, GMM, Agglomerative clustering — Mastering the popular models in a segmentation problem | by Indraneel Dutta Baruah | Towards Data Science | In the current age, the availability of granular data for a large pool of customers/products and technological capability to handle petabytes of data efficiently is growing rapidly. Due to this, it’s now possible to come up with very strategic and meaningful clusters for effective targeting. And identifying the target ... | [
{
"code": null,
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"text": "In the current age, the availability of granular data for a large pool of customers/products and technological capability to handle petabytes of data efficiently is growing rapidly. Due to this, it’s now possible to come up with very strategic and meaning... |
Hands-On Jupyter Notebook Hacks. Hacks, tips and shortcuts you should be... | by Shinichi Okada | Towards Data Science | Table of ContentsIntroduction1. Gist2. display() over print() for dataFrame3. Output without print()4. Bash commands without !5. Other useful shortcuts6. Nbextensions7. Move Selected Cells8. Tabnine9. Autopep8
In this short article, I am going to write Jupyter Notebook tips, extensions and hacks that I found useful whe... | [
{
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},
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"code": null,
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Binary Tree to Binary Search Tree Conversion using STL set - GeeksforGeeks | 24 Jun, 2021
Given a Binary Tree, convert it to a Binary Search Tree. The conversion must be done in such a way that keeps the original structure of the Binary Tree.This solution will use Sets of C++ STL instead of array-based solution.Examples:
Example 1
Input:
10
/ \
2 7
/ \
... | [
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"text": "Given a Binary Tree, convert it to a Binary Search Tree. The conversion must be done in such a way that keeps the original structure of the Binary Tree.This soluti... |
Extraction of Objects In Images and Videos Using 5 Lines of Code. | by Ayoola Olafenwa (she/her) | Towards Data Science | Computer vision is the medium through which computers see and identify objects. The goal of computer vision is to make it possible for computers to analyze objects in images and videos, to solve different vision problems. Object Segmentation has paved way for convenient analysis of objects in images and videos, contrib... | [
{
"code": null,
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"s": 171,
"text": "Computer vision is the medium through which computers see and identify objects. The goal of computer vision is to make it possible for computers to analyze objects in images and videos, to solve different vision problems. Object Segmentation has paved way... |
Train BERT-Large in your own language | by Hajdu Róbert | Towards Data Science | BERT-Large has been a real “game changer” technology in the field of Natural Language Processing in recent years. Extending the basic model with transfer learning, we get state-of-the-art solutions for tasks such as Question Answering, Named Entity Recognition or Text Summarization. The model currently exists in around... | [
{
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"text": "BERT-Large has been a real “game changer” technology in the field of Natural Language Processing in recent years. Extending the basic model with transfer learning, we get state-of-the-art solutions for tasks such as Question Answering, Named Entity Recogn... |
Text Extraction using Regular Expression (Python) | by KahEm Chu | Towards Data Science | “Regular Expression (RegEx) is one of the unsung successes in standardization in computer science,” [1].
In the example of my previous article, the regular expression is used to clean up the noise and perform tokenization to the text. Well, what we can do with RegEx in Text Analytics is far more than that. In this arti... | [
{
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},
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Python program to find the most occurring character and its count | In this article, we will learn about the solution and approach to solve the given problem statement.
Given an input string we need to find the most occurring character and its count.
Create a dictionary using Counter method having strings as keys and their frequencies as values.
Create a dictionary using Counter method... | [
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"text": "Given an input string we need to find the most occurring character and its count.... |
C# | Copy() Method - GeeksforGeeks | 21 Jun, 2019
In C#, Copy() is a string method. It is used to create a new instance of String with the same value for a specified String. The Copy() method returns a String object, which is the same as the original string but represents a different object reference. To check its reference, use assignment operation, whic... | [
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Should I repartition?. About Data Distribution in Spark SQL. | by David Vrba | Towards Data Science | In a distributed environment, having proper data distribution becomes a key tool for boosting performance. In the DataFrame API of Spark SQL, there is a function repartition() that allows controlling the data distribution on the Spark cluster. The efficient usage of the function is however not straightforward because c... | [
{
"code": null,
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"text": "In a distributed environment, having proper data distribution becomes a key tool for boosting performance. In the DataFrame API of Spark SQL, there is a function repartition() that allows controlling the data distribution on the Spark cluster. The efficie... |
Node.js fsPromises.stat() Method - GeeksforGeeks | 08 Oct, 2021
The fsPromises.stat() method is used to return information about the given file or directory. The Promise is resolved with the fs.Stats object for the given path.
Syntax:
fsPromises.stat( path, options )
Parameters: This method accept two parameters as mentioned above and described below:
path: It holds th... | [
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"text": "The fsPromises.stat() method is used to return information about the given file or directory. The Promise is resolved with the fs.Stats object for the given path."... |
4 Simple Ways to Import Word and PDF Data into Python when Pandas Fails | by Kat Li | Towards Data Science | Being a part of the data science/analytics team, you’ll probably encounter many file types to import and analyze in Python. In the ideal world, all our data reside in the cloud-based databases (e.g., SQL, NoSQL) that are easy to query and extract. In the real world, however, we rarely get neat tabular data. Also, if we... | [
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"s": 171,
"text": "Being a part of the data science/analytics team, you’ll probably encounter many file types to import and analyze in Python. In the ideal world, all our data reside in the cloud-based databases (e.g., SQL, NoSQL) that are easy to query and extract. In the ... |
Apex - DML | In this chapter, we will discuss how to perform the different Database Modification Functionalities in Salesforce. There are two says with which we can perform the functionalities.
DML are the actions which are performed in order to perform insert, update, delete, upsert, restoring records, merging records, or converti... | [
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},
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How to plot a high resolution graph in Matplotlib? | We can use the resolution value, i.e., dots per inch, and the image format to plot a high-resolution graph in Matplotlib.
Create a dictionary with Column 1 and Column 2 as the keys and Values are like i and i*i, where i is from 0 to 10, respectively.
Create a dictionary with Column 1 and Column 2 as the keys and Values... | [
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"text": "We can use the resolution value, i.e., dots per inch, and the image format to plot a high-resolution graph in Matplotlib."
},
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"text": "Create a dictionary with Column 1 and Column 2 as the keys a... |
Ten Tricks To Speed Up Your Python Codes | by Jun | Towards Data Science | Python is slow.
I bet you might encounter this counterargument many times about using Python, especially from people who come from C or C++ or Java world. This is true in many cases, for instance, looping over or sorting Python arrays, lists, or dictionaries can be sometimes slow. After all, Python is developed to make... | [
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Mahalanobis Distance and Multivariate Outlier Detection in R | Towards Data Science | Mahalanobis Distance (MD) is an effective distance metric that finds the distance between point and a distribution (see also). It is quite effective on multivariate data. The reason why MD is effective on multivariate data is because it uses covariance between variables in order to find the distance of two points. In o... | [
{
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"text": "Mahalanobis Distance (MD) is an effective distance metric that finds the distance between point and a distribution (see also). It is quite effective on multivariate data. The reason why MD is effective on multivariate data is because it uses covariance be... |
Pylance: The best Python extension for VS Code | by Dimitris Poulopoulos | Towards Data Science | Visual Studio Code is arguably the best open-source code editor, and, of course, Python is treated as a first-class citizen inside its ecosystem. The corresponding Microsoft extension comes with “rich support for the Python Language, including features like IntelliSense, linting, debugging, code navigation, code format... | [
{
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"text": "Visual Studio Code is arguably the best open-source code editor, and, of course, Python is treated as a first-class citizen inside its ecosystem. The corresponding Microsoft extension comes with “rich support for the Python Language, including features li... |
C++ Program to Implement Disjoint Set Data Structure | Disjoint set is basically as group of sets where no item can be in more than one set. It supports union and find operation on subsets.
Find(): It is used to find in which subset a particular element is in and returns the representative of that particular set.
Union(): It merges two different subsets into a single subse... | [
{
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"text": "Disjoint set is basically as group of sets where no item can be in more than one set. It supports union and find operation on subsets."
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{
"code": null,
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"text": "Find(): It is used to find in which subset a pa... |
Mahotas - RGB to LAB Conversion - GeeksforGeeks | 08 Jul, 2021
In this article we will see how we can covert rgb image to CIE L*a*b* in mahotas. An RGB image, sometimes referred to as a truecolor image, is stored in MATLAB as an m-by-n-by-3 data array that defines red, green, and blue color components for each individual pixel. The CIELAB color space (also known as CI... | [
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"text": "In this article we will see how we can covert rgb image to CIE L*a*b* in mahotas. An RGB image, sometimes referred to as a truecolor image, is stored in MATLAB as ... |
Chaining comparison operators in Python | Sometimes we need to use more than one condition checking in a single statement. There are some basic syntax for these kind of checking is x < y < z, or if x < y and x < z etc.
Like other languages, there are some basic comparison operators in Python. These comparison operators are <, <=, >, >=, ==, !=, is, is not, in,... | [
{
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"text": "Sometimes we need to use more than one condition checking in a single statement. There are some basic syntax for these kind of checking is x < y < z, or if x < y and x < z etc."
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Vertical Traversal of Binary Tree | Practice | GeeksforGeeks | Given a Binary Tree, find the vertical traversal of it starting from the leftmost level to the rightmost level.
If there are multiple nodes passing through a vertical line, then they should be printed as they appear in level order traversal of the tree.
Example 1:
Input:
1
/ \
2 3
... | [
{
"code": null,
"e": 492,
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"text": "Given a Binary Tree, find the vertical traversal of it starting from the leftmost level to the rightmost level.\nIf there are multiple nodes passing through a vertical line, then they should be printed as they appear in level order traversal of the tree."... |
sum() function in Python | 18 May, 2022
Sum of numbers in the list is required everywhere. Python provides an inbuilt function sum() which sums up the numbers in the list.
Syntax:
sum(iterable, start)
iterable : iterable can be anything list , tuples or dictionaries ,
but most importantly it should be numbers.
start : this start is added to t... | [
{
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"text": "Sum of numbers in the list is required everywhere. Python provides an inbuilt function sum() which sums up the numbers in the list."
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Find the maximum GCD of the siblings of a Binary Tree | 06 Jun, 2022
Given a 2d-array arr[][] which represents the nodes of a Binary tree, the task is to find the maximum GCD of the siblings of this tree without actually constructing it.
Example:
Input: arr[][] = {{4, 5}, {4, 2}, {2, 3}, {2, 1}, {3, 6}, {3, 12}} Output: 6 Explanation:
For the above tree, the maximum GCD... | [
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"text": "Given a 2d-array arr[][] which represents the nodes of a Binary tree, the task is to find the maximum GCD of the siblings of this tree without actually constructing it."
},... |
How to Calculate SMAPE in Excel? | 28 Jul, 2021
In statistics, we often use Forecasting Accuracy which denotes the closeness of a quantity to the actual value of that particular quantity. The actual value is also known as the true value. It basically denotes the degree of closeness or a verification process that is highly used by business professionals ... | [
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"text": "In statistics, we often use Forecasting Accuracy which denotes the closeness of a quantity to the actual value of that particular quantity. The actual value is also known as t... |
SQL Query to Find Shortest & Longest String From a Column of a Table | 13 Apr, 2021
Here, we are going to see how to find the shortest and longest string from a column of a table in a database with the help of SQL queries. We will first create a database “geeks“, then we create a table “friends” with “firstName“, “lastName“, “age” columns. Then will perform our SQL query on this table to ... | [
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"text": "Here, we are going to see how to find the shortest and longest string from a column of a table in a database with the help of SQL queries. We will first create a database “gee... |
How to Create and Configure Wi-Fi Hotspot in Windows 10? | 15 Sep, 2021
In layman’s term, Hotspot is a Wi-Fi network created from a device other than a router. In our case, it will be created from a Windows device connected to the internet using broadband or a dongle connection. Hotspot can be used to share the internet of our Windows device to our smartphones or other devices... | [
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"text": "In layman’s term, Hotspot is a Wi-Fi network created from a device other than a router. In our case, it will be created from a Windows device connected to the internet using ... |
unordered_map end( ) function in C++ STL | 19 Sep, 2018
The unordered_map::end() is a built-in function in C++ STL which returns an iterator pointing to the position past the last element in the container in the unordered_map container. In an unordered_map object, there is no guarantee that which specific element is considered its first element. But all the ele... | [
{
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"text": "The unordered_map::end() is a built-in function in C++ STL which returns an iterator pointing to the position past the last element in the container in the unordered_map cont... |
Python | N largest values in dictionary | 26 Aug, 2019
Many times while working with Python dictionary, we can have a particular problem to find the N maxima of values in numerous keys. This problem is quite common while working with web development domain. Let’s discuss several ways in which this task can be performed.
Method #1 : itemgetter() + items() + sor... | [
{
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"text": "Many times while working with Python dictionary, we can have a particular problem to find the N maxima of values in numerous keys. This problem is quite common while working w... |
Java program to calculate mode in Java | In statistics math, a mode is a value that occurs the highest numbers of time. For Example, assume a set of values 3, 5, 2, 7, 3. The mode of this value set is 3 as it appears more than any other number.
1.Take an integer set A of n values.
2.Count the occurrence of each integer value in A.
3.Display the value with the... | [
{
"code": null,
"e": 1391,
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"text": "In statistics math, a mode is a value that occurs the highest numbers of time. For Example, assume a set of values 3, 5, 2, 7, 3. The mode of this value set is 3 as it appears more than any other number."
},
{
"code": null,
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Underscore.js _.isEqual() Function | 25 Nov, 2021
The _.isEqual() function: is used to find that whether the 2 given arrays are same or not. Two arrays are the same if they have the same number of elements, both the property and the values need to be the same. It may be beneficial in situations where the elements of the array are not known and we want to ... | [
{
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},
{
"code": null,
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"text": "The _.isEqual() function: is used to find that whether the 2 given arrays are same or not. Two arrays are the same if they have the same number of elements, both the property ... |
HTTP headers | Access-Control-Request-Method | 10 May, 2020
The HTTP headers Access-Control-Request-Method is a request type header which has been used to inform the server that which HTTP method will be used when the actual request is made.
Syntax:
Access-Control-Request-Method: <method>
Directives: This header accept a single directive which is mentioned above an... | [
{
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"text": "The HTTP headers Access-Control-Request-Method is a request type header which has been used to inform the server that which HTTP method will be used when the actual request is... |
Challenges of Data Mining | 27 Feb, 2020
Nowadays Data Mining and knowledge discovery are evolving a crucial technology for business and researchers in many domains.Data Mining is developing into established and trusted discipline, many still pending challenges have to be solved.
Some of these challenges are given below.
Security and Social Chall... | [
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"text": "Nowadays Data Mining and knowledge discovery are evolving a crucial technology for business and researchers in many domains.Data Mining is developing into established and tru... |
Java Thread Priority in Multithreading | 25 Jun, 2022
As we already know java being completely object-oriented works within a multithreading environment in which thread scheduler assigns the processor to a thread based on the priority of thread. Whenever we create a thread in Java, it always has some priority assigned to it. Priority can either be given by JV... | [
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"text": "As we already know java being completely object-oriented works within a multithreading environment in which thread scheduler assigns the processor to a thread based on the pr... |
Implementing interactive Online Shopping in C++ | 07 Jul, 2021
Online shopping is all about calculating the total amount for the items selected by the customer. In this article, we will discuss a menu-driven C++ program for Online Shopping.
Users will be able to purchase laptops, Mobile, Computer Courses.Users will be able to add items.Users will be able to reduce th... | [
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"text": "Online shopping is all about calculating the total amount for the items selected by the customer. In this article, we will discuss a menu-driven C++ program for Online Shoppi... |
How to make Array.indexOf() case insensitive in JavaScript ? | 31 Dec, 2019
The task is to make the Array.indexOf() method case insensitive. Here are a few of the most techniques discussed with the help of JavaScript.
.toLowerCase() method
.toUpperCase() method
The .toLowerCase() method: Transform the search string and elements of the array to the lower case using .toLowerCase() m... | [
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"text": "The task is to make the Array.indexOf() method case insensitive. Here are a few of the most techniques discussed with the help of JavaScript."
},
{
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"... |
How to import JSON File in MongoDB using Python? | 10 Jun, 2020
Prerequisistes: MongoDB and Python, Working With JSON Data in Python
MongoDB is a cross-platform document-oriented and a non relational (i.e NoSQL) database program. It is an open-source document database, that stores the data in the form of key-value pairs.
JSON stands for JavaScript Object Notation. It i... | [
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"text": "Prerequisistes: MongoDB and Python, Working With JSON Data in Python"
},
{
"code": null,
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"text": "MongoDB is a cross-platform document... |
Python | Pandas Series.duplicated() | 13 Feb, 2019
Pandas series is a One-dimensional ndarray with axis labels. The labels need not be unique but must be a hashable type. The object supports both integer and label-based indexing and provides a host of methods for performing operations involving the index.
Pandas Series.duplicated() function indicate duplic... | [
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How to Generate a PDF file in Android App? | 20 Jun, 2022
There are many apps in which data from the app is provided to users in the downloadable PDF file format. So in this case we have to create a PDF file from the data present inside our app and represent that data properly inside our app. So by using this technique we can easily create a new PDF according to ... | [
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"text": "There are many apps in which data from the app is provided to users in the downloadable PDF file format. So in this case we have to create a PDF file from the data present ins... |
Word Embeddings in NLP | 26 May, 2022
What are Word Embeddings?
It is an approach for representing words and documents. Word Embedding or Word Vector is a numeric vector input that represents a word in a lower-dimensional space. It allows words with similar meaning to have a similar representation. They can also approximate meaning. A word vec... | [
{
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"code": null,
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"text": "What are Word Embeddings?"
},
{
"code": null,
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"text": "It is an approach for representing words and documents. Word Embedding or Word Ve... |
How to get current CPU and RAM usage in Python? | 24 Jan, 2021
Prerequisites:
psutil
os
CPU usage or utilization refers to the time taken by a computer to process some information. RAM usage or MAIN MEMORY UTILIZATION on the other hand refers to the amount of time RAM is used by a certain system at a particular time. Both of these can be retrieved using python.
Metho... | [
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Robot Framework - Working With Variables | In this chapter, we will discuss how to create and use variables in Robot Framework. Variables are used to hold a value, which can be used in test cases, user-defined keywords, etc.
We are going to discuss following variables available in Robot Framework
Scalar Variable
List Variable
Dictionary Variable
We will underst... | [
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How to Change the Line Width of a Graph Plot in Matplotlib with Python? | 12 Nov, 2020
Prerequisite : Matplotlib
In this article we will learn how to Change the Line Width of a Graph Plot in Matplotlib with Python. For that one must be familiar with the given concepts:
Matplotlib : Matplotlib is a tremendous visualization library in Python for 2D plots of arrays. Matplotlib may be a multi-p... | [
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},
{
"code": null,
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MySQL | Operator precedence | 04 Feb, 2019
Operator precedence specifies the order in which operators are evaluated when two or more operators with different precedence are adjacent in an expression.
For example, 1+2/3 gives the different result as compared to (1+2)/3. Just like all other programming languages C, C++, Java etc. MySQL also has a pre... | [
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"text": "Operator precedence specifies the order in which operators are evaluated when two or more operators with different precedence are adjacent in an expression."
},
{
"cod... |
Difference between Transparent Bridge and Source Routing Bridge | 08 Nov, 2020
Bridge is a device that is attached to connect two or more LANs to create continued LAN. A bridge works at data link layer of the OSI reference model.
Transparent Bridge: Transparent bridge automatically maintains a routing table and update table in response to maintain changing topology. Transparent brid... | [
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{
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"text": "Bridge is a device that is attached to connect two or more LANs to create continued LAN. A bridge works at data link layer of the OSI reference model. "
},
{
"code": n... |
Python | Pandas Series.from_csv() | 13 Feb, 2019
Pandas series is a One-dimensional ndarray with axis labels. The labels need not be unique but must be a hashable type. The object supports both integer- and label-based indexing and provides a host of methods for performing operations involving the index.
Pandas Series.from_csv() function is used to read ... | [
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JavaScript Array concat() Method | 04 Oct, 2021
Below is the example of Array concat() method to join three arrays.
Example:<script>// JavaScript code for concat() methodfunction func() { var num1 = [11, 12, 13], num2 = [14, 15, 16], num3 = [17, 18, 19]; document.write(num1.concat(num2, num3));}func();</script>
<script>// JavaScript ... | [
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{
"code": null,
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"text": "Below is the example of Array concat() method to join three arrays."
},
{
"code": null,
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"text": "Example:<script>// JavaScript code fo... |
JavaScript Array push() Method | 01 Nov, 2021
Below is the example of Array push() method.
Example:<script> function func() { var arr = ['GFG', 'gfg', 'g4g']; // Pushing the element into the array arr.push('GeeksforGeeks'); document.write(arr); } func(); </script>
<script>... | [
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"code": null,
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Text Similarity with TensorFlow.js Universal Sentence Encoder | Towards Data Science | Have you wondered how search engines understand your queries and retrieve relevant results? How chatbots extract your intent from your questions and provide the most appropriate response?
In this story, I will detail each of the parts needed to build a textual similarity analysis web-app, including:
word embeddings
sen... | [
{
"code": null,
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"text": "Have you wondered how search engines understand your queries and retrieve relevant results? How chatbots extract your intent from your questions and provide the most appropriate response?"
},
{
"code": null,
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"text":... |
CSS Transitions | CSS transitions allows you to change property values smoothly, over a given duration.
Mouse over the element below to see a CSS transition effect:
In this chapter you will learn about the following properties:
transition
transition-delay
transition-duration
transition-property
transition-timing-function
The numbers in ... | [
{
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"text": "Mouse over the element below to see a CSS transition effect:"
},
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Hibernate - Mapping Files | An Object/relational mappings are usually defined in an XML document. This mapping file instructs Hibernate — how to map the defined class or classes to the database tables?
Though many Hibernate users choose to write the XML by hand, but a number of tools exist to generate the mapping document. These include XDoclet, ... | [
{
"code": null,
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"text": "An Object/relational mappings are usually defined in an XML document. This mapping file instructs Hibernate — how to map the defined class or classes to the database tables?"
},
{
"code": null,
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"text": "Though m... |
How to use JavaScript to hide a DIV when the user clicks outside of it? | To hide a div when the user clicks outside of it, try to run the following code
Live Demo
<!DOCTYPE html>
<html>
<body>
<script>
window.onload = function(){
var hideMe = document.getElementById('hideMe');
document.onclick = function(e){
if(e.target.id !== 'hideMe... | [
{
"code": null,
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"text": "To hide a div when the user clicks outside of it, try to run the following code"
},
{
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"s": 1142,
"text": "Live Demo"
},
{
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Boolean Indexing in Python | The Boolean values like True & false and 1&0 can be used as indexes in panda dataframe. They can help us filter out the required records. In the below exampels we will see different methods that can be used to carry out the Boolean indexing operations.
Let’s consider a data frame desciribing the data from a game. The v... | [
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"e": 1315,
"s": 1062,
"text": "The Boolean values like True & false and 1&0 can be used as indexes in panda dataframe. They can help us filter out the required records. In the below exampels we will see different methods that can be used to carry out the Boolean indexing operations."... |
HTTP headers | Content-Disposition - GeeksforGeeks | 22 Jun, 2020
The HTTP Content Disposition is a response-type header field that gives information on how to process the response payload and additional information such as filename when user saves it locally. This response header field holds a number of values and parameters in the larger context of MIME (Multipurpose I... | [
{
"code": null,
"e": 24551,
"s": 24523,
"text": "\n22 Jun, 2020"
},
{
"code": null,
"e": 24981,
"s": 24551,
"text": "The HTTP Content Disposition is a response-type header field that gives information on how to process the response payload and additional information such as filen... |
Euler tour of Binary Tree - GeeksforGeeks | 30 Mar, 2022
Given a binary tree where each node can have at most two child nodes, the task is to find the Euler tour of the binary tree. Euler tour is represented by a pointer to the topmost node in the tree. If the tree is empty, then value of root is NULL.Examples:
Input :
Output: 1 5 4 2 4 3 4 5 1
Approach: ... | [
{
"code": null,
"e": 24165,
"s": 24137,
"text": "\n30 Mar, 2022"
},
{
"code": null,
"e": 24423,
"s": 24165,
"text": "Given a binary tree where each node can have at most two child nodes, the task is to find the Euler tour of the binary tree. Euler tour is represented by a pointer... |
LaTeX for Data Scientists, in Under 6 Minutes | by Andre Ye | Towards Data Science | As a data scientist, you work with data. Data is inherently mathematical — and it is imperative that you are able to communicate those ideas clearly. Even if you’re not developing algorithms, the ability the express common data science techniques — perhaps the result of a polynomial regression or performance of a box-c... | [
{
"code": null,
"e": 527,
"s": 172,
"text": "As a data scientist, you work with data. Data is inherently mathematical — and it is imperative that you are able to communicate those ideas clearly. Even if you’re not developing algorithms, the ability the express common data science techniques — perhap... |
Count number of occurrences (or frequency) in a sorted array - GeeksforGeeks | 02 Dec, 2021
Given a sorted array arr[] and a number x, write a function that counts the occurrences of x in arr[]. Expected time complexity is O(Logn)
Examples:
Input: arr[] = {1, 1, 2, 2, 2, 2, 3,}, x = 2
Output: 4 // x (or 2) occurs 4 times in arr[]
Input: arr[] = {1, 1, 2, 2, 2, 2, 3,}, x = 3
Output:... | [
{
"code": null,
"e": 24890,
"s": 24862,
"text": "\n02 Dec, 2021"
},
{
"code": null,
"e": 25030,
"s": 24890,
"text": "Given a sorted array arr[] and a number x, write a function that counts the occurrences of x in arr[]. Expected time complexity is O(Logn) "
},
{
"code": n... |
Create a stacked bar plot in Matplotlib - GeeksforGeeks | 17 Dec, 2020
In this article, we will learn how to Create a stacked bar plot in Matplotlib. Let’s discuss some concepts :
Matplotlib is a tremendous visualization library in Python for 2D plots of arrays. Matplotlib may be a multi-platform data visualization library built on NumPy arrays and designed to figure with the... | [
{
"code": null,
"e": 30302,
"s": 30274,
"text": "\n17 Dec, 2020"
},
{
"code": null,
"e": 30411,
"s": 30302,
"text": "In this article, we will learn how to Create a stacked bar plot in Matplotlib. Let’s discuss some concepts :"
},
{
"code": null,
"e": 30631,
"s": 3... |
Prime String in C++ | In this problem, we are given a string. Our task is to print YES / NO based on is the sum of ASCII values of the characters of the string is prime or not.
ASCII values are character encodings
Prime number is a number that is divisible only by the number itself and 1.
Let’s take an example to understand the problem,
Inp... | [
{
"code": null,
"e": 1217,
"s": 1062,
"text": "In this problem, we are given a string. Our task is to print YES / NO based on is the sum of ASCII values of the characters of the string is prime or not."
},
{
"code": null,
"e": 1254,
"s": 1217,
"text": "ASCII values are character ... |
Puppeteer - Capture Screenshot | We can capture screenshots while working on automation tests developed in Puppeteer using the screenshot method. A screenshot is generally captured if we encounter an application error, a failure in a test case, and so on.
The syntax to capture screenshot in Puppeteer is as follows −
await page.screenshot({
path: 't... | [
{
"code": null,
"e": 2973,
"s": 2750,
"text": "We can capture screenshots while working on automation tests developed in Puppeteer using the screenshot method. A screenshot is generally captured if we encounter an application error, a failure in a test case, and so on."
},
{
"code": null,
... |
Replace substring with another substring C++ | Here we will see how to replace substring with another substring. It replaces the portion of the string that begins at character pos and spans len characters.
The structure of the replace function is like below:
string& replace (size_t pos, size_t len, const string& str, size_t subpos, size_t sublen);
The parameters ar... | [
{
"code": null,
"e": 1221,
"s": 1062,
"text": "Here we will see how to replace substring with another substring. It replaces the portion of the string that begins at character pos and spans len characters."
},
{
"code": null,
"e": 1274,
"s": 1221,
"text": "The structure of the re... |
Priority Queue in C++ Standard Template Library (STL) | Priority queue is an abstract data type for storing a collection of prioritized elements that supports insertion and deletion of an element based upon their priorities, that is, the element with first priority can be removed at any time. The priority queue doesn’t stores elements in linear fashion with respect to their... | [
{
"code": null,
"e": 1516,
"s": 1062,
"text": "Priority queue is an abstract data type for storing a collection of prioritized elements that supports insertion and deletion of an element based upon their priorities, that is, the element with first priority can be removed at any time. The priority qu... |
Best practices for Professional Developer - Django Framework - GeeksforGeeks | 08 Jun, 2020
Django is an open-source, Python-based framework for building web applications. To make our Django code more readable and efficient we should follow a certain set of rules/practices. These should not be seen as the right way or the only way to work with Django, but instead best practices to work with Djang... | [
{
"code": null,
"e": 24757,
"s": 24729,
"text": "\n08 Jun, 2020"
},
{
"code": null,
"e": 25076,
"s": 24757,
"text": "Django is an open-source, Python-based framework for building web applications. To make our Django code more readable and efficient we should follow a certain set ... |
Learning Reinforcement Learning: REINFORCE with PyTorch! | by Christian Hubbs | Towards Data Science | The REINFORCE algorithm is one of the first policy gradient algorithms in reinforcement learning and a great jumping off point to get into more advanced approaches. Policy gradients are different than Q-value algorithms because PG’s try to learn a parameterized policy instead of estimating Q-values of state-action pair... | [
{
"code": null,
"e": 700,
"s": 171,
"text": "The REINFORCE algorithm is one of the first policy gradient algorithms in reinforcement learning and a great jumping off point to get into more advanced approaches. Policy gradients are different than Q-value algorithms because PG’s try to learn a paramet... |
Python - Remove duplicate values from a Pandas DataFrame | To remove duplicate values from a Pandas DataFrame, use the drop_duplicates() method. At first, create a DataFrame with 3 columns −
dataFrame = pd.DataFrame({'Car': ['BMW', 'Mercedes', 'Lamborghini', 'BMW', 'Mercedes', 'Porsche'],'Place': ['Delhi', 'Hyderabad', 'Chandigarh', 'Delhi', 'Hyderabad', 'Mumbai'],'UnitsSold':... | [
{
"code": null,
"e": 1194,
"s": 1062,
"text": "To remove duplicate values from a Pandas DataFrame, use the drop_duplicates() method. At first, create a DataFrame with 3 columns −"
},
{
"code": null,
"e": 1410,
"s": 1194,
"text": "dataFrame = pd.DataFrame({'Car': ['BMW', 'Mercedes... |
iwconfig command in Linux with Examples - GeeksforGeeks | 22 May, 2019
iwconfig command in Linux is like ifconfig command, in the sense it works with kernel-resident network interface but it is dedicated to wireless networking interfaces only. It is used to set the parameters of the network interface that are particular to the wireless operation like SSID, frequency etc. iwco... | [
{
"code": null,
"e": 24015,
"s": 23987,
"text": "\n22 May, 2019"
},
{
"code": null,
"e": 24444,
"s": 24015,
"text": "iwconfig command in Linux is like ifconfig command, in the sense it works with kernel-resident network interface but it is dedicated to wireless networking interfa... |
RSA Cipher Decryption | This chapter is a continuation of the previous chapter where we followed step wise implementation of encryption using RSA algorithm and discusses in detail about it.
The function used to decrypt cipher text is as follows −
def decrypt(ciphertext, priv_key):
cipher = PKCS1_OAEP.new(priv_key)
return cipher.decrypt(... | [
{
"code": null,
"e": 2458,
"s": 2292,
"text": "This chapter is a continuation of the previous chapter where we followed step wise implementation of encryption using RSA algorithm and discusses in detail about it."
},
{
"code": null,
"e": 2515,
"s": 2458,
"text": "The function use... |
Executing C# code in Linux | The .NET centric applications are meant to windows operating system up till now, but now Microsoft has introduced a new cross-platform application called Mono which enables the execution of the application developed under the .NET platform in Linux environment by giving an impression in such a way that as if we are run... | [
{
"code": null,
"e": 1434,
"s": 1062,
"text": "The .NET centric applications are meant to windows operating system up till now, but now Microsoft has introduced a new cross-platform application called Mono which enables the execution of the application developed under the .NET platform in Linux envi... |
How to handle EOFException in java? | While reading the contents of a file in certain scenarios the end of the file will be reached in such scenarios a EOFException is thrown.
Especially, this exception is thrown while reading data using the Input stream objects. In other scenarios a specific value will be thrown when the end of file reached.
Let us consid... | [
{
"code": null,
"e": 1200,
"s": 1062,
"text": "While reading the contents of a file in certain scenarios the end of the file will be reached in such scenarios a EOFException is thrown."
},
{
"code": null,
"e": 1369,
"s": 1200,
"text": "Especially, this exception is thrown while r... |
TIKA - Extracting HTML Document | Given below is the program to extract content and metadata from an HTML document.
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import org.apache.tika.exception.TikaException;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.parser.ParseContext;
import org.apache.tika... | [
{
"code": null,
"e": 2192,
"s": 2110,
"text": "Given below is the program to extract content and metadata from an HTML document."
},
{
"code": null,
"e": 3380,
"s": 2192,
"text": "import java.io.File;\nimport java.io.FileInputStream;\nimport java.io.IOException;\n\nimport org.apa... |
Java - DataInputStream | The DataInputStream is used in the context of DataOutputStream and can be used to read primitives.
Following is the constructor to create an InputStream −
InputStream in = new DataInputStream(InputStream in);
Once you have DataInputStream object in hand, then there is a list of helper methods, which can be used to rea... | [
{
"code": null,
"e": 2476,
"s": 2377,
"text": "The DataInputStream is used in the context of DataOutputStream and can be used to read primitives."
},
{
"code": null,
"e": 2532,
"s": 2476,
"text": "Following is the constructor to create an InputStream −"
},
{
"code": null,... |
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