title stringlengths 3 221 | text stringlengths 17 477k | parsed listlengths 0 3.17k |
|---|---|---|
How to Pass ArrayList Object as Function Argument in java? - GeeksforGeeks | 07 Jan, 2021
ArrayList class in Java is basically a resize-able array i.e. it can grow and shrink in size dynamically according to the values that we add or remove to/from it. It is present in java.util package. If we want to pass an ArrayList as an argument to a function then we can easily do it using the syntax menti... | [
{
"code": null,
"e": 23557,
"s": 23529,
"text": "\n07 Jan, 2021"
},
{
"code": null,
"e": 23876,
"s": 23557,
"text": "ArrayList class in Java is basically a resize-able array i.e. it can grow and shrink in size dynamically according to the values that we add or remove to/from it. ... |
All permutations of a string using iteration? | In this section we will see how to get all permutations of a string. The recursive approach is very simple. It uses the back-tracking procedure. But here we will use the iterative approach.
All permutations of a string ABC are like {ABC, ACB, BAC, BCA, CAB, CBA}. Let us see the algorithm to get the better idea.
begin
... | [
{
"code": null,
"e": 1252,
"s": 1062,
"text": "In this section we will see how to get all permutations of a string. The recursive approach is very simple. It uses the back-tracking procedure. But here we will use the iterative approach."
},
{
"code": null,
"e": 1375,
"s": 1252,
"... |
How to remove a member from the local group using PowerShell? | To remove a member from the local group using PowerShell, we can use the RemoveLocalGroupMember command. This command is available in the module Microsoft.PowerShell.LocalAccounts in and above PowerShell version 5.1.
To use this command, we need to provide two parameter values. One is the -Group (Local Group Name) and ... | [
{
"code": null,
"e": 1279,
"s": 1062,
"text": "To remove a member from the local group using PowerShell, we can use the RemoveLocalGroupMember command. This command is available in the module Microsoft.PowerShell.LocalAccounts in and above PowerShell version 5.1."
},
{
"code": null,
"e":... |
C program for a number to be expressed as a sum of two prime numbers. | Find out if a given number can be expressed as sum of two prime numbers or not.
Given a positive integer N, we need to check if the number N can be represented as a sum of two prime numbers.
Consider an example given below −
20 can be expressed as sum of two prime numbers 3 and 17, 13 and 7.
20= 3+7
20= 13+7
Refer an a... | [
{
"code": null,
"e": 1142,
"s": 1062,
"text": "Find out if a given number can be expressed as sum of two prime numbers or not."
},
{
"code": null,
"e": 1253,
"s": 1142,
"text": "Given a positive integer N, we need to check if the number N can be represented as a sum of two prime ... |
Java Generics - Guidelines for Wildcard Use | Wildcards can be used in three ways −
Upper bound Wildcard − ? extends Type.
Upper bound Wildcard − ? extends Type.
Lower bound Wildcard − ? super Type.
Lower bound Wildcard − ? super Type.
Unbounded Wildcard − ?
Unbounded Wildcard − ?
In order to decide which type of wildcard best suits the condition, let's first clas... | [
{
"code": null,
"e": 2678,
"s": 2640,
"text": "Wildcards can be used in three ways −"
},
{
"code": null,
"e": 2717,
"s": 2678,
"text": "Upper bound Wildcard − ? extends Type."
},
{
"code": null,
"e": 2756,
"s": 2717,
"text": "Upper bound Wildcard − ? extends T... |
How to find the unique values in a column of an R data frame? | Categorical variables have multiple categories but if the data set is large and the categories are also large in numbers then it becomes a little difficult to recognize them. Therefore, we can extract unique values for categorical variables that will help us to easily recognize the categories of a categorical variable.... | [
{
"code": null,
"e": 1451,
"s": 1062,
"text": "Categorical variables have multiple categories but if the data set is large and the categories are also large in numbers then it becomes a little difficult to recognize them. Therefore, we can extract unique values for categorical variables that will he... |
How to update field to add value to existing value in MySQL? | You can update field to add value to an existing value with the help of UPDATE and SET command. The syntax is as follows −
UPDATE yourTableName SET yourColumnName = yourColumnName+integerValueToAdd WHERE yourCondition;
To understand the above syntax, let us create a table. The query to create a table is as follows −
my... | [
{
"code": null,
"e": 1185,
"s": 1062,
"text": "You can update field to add value to an existing value with the help of UPDATE and SET command. The syntax is as follows −"
},
{
"code": null,
"e": 1281,
"s": 1185,
"text": "UPDATE yourTableName SET yourColumnName = yourColumnName+in... |
Let’s be A* — Learn and Code a Path Planning algorithm to fly a Drone — Part II | by Percy Jaiswal | Towards Data Science | Unity Simulator, Python Environment Installation and Starter FilesBefore beginning to code anything, we need to get our setup and tools installed. We begin this by downloading required Unity simulator that’s appropriate for your operating system from here. Next, we get required Python libraries installed. I would encou... | [
{
"code": null,
"e": 878,
"s": 172,
"text": "Unity Simulator, Python Environment Installation and Starter FilesBefore beginning to code anything, we need to get our setup and tools installed. We begin this by downloading required Unity simulator that’s appropriate for your operating system from here... |
Difference between DELETE and DROP in SQL - GeeksforGeeks | 19 Aug, 2019
Prerequisite – SQL CommandsDELETE is a Data Manipulation Language (DML) command and used when you want to remove some or all the tuples from a relation. If WHERE clause is used along with the DELETE command it removes only those tuples which satisfy the WHERE clause condition but if WHERE clause is missing... | [
{
"code": null,
"e": 24304,
"s": 24276,
"text": "\n19 Aug, 2019"
},
{
"code": null,
"e": 24702,
"s": 24304,
"text": "Prerequisite – SQL CommandsDELETE is a Data Manipulation Language (DML) command and used when you want to remove some or all the tuples from a relation. If WHERE c... |
Split an image array into tiles using numpy | Towards Data Science | There are plenty of situations where you would need to break down a large image in tiles (e.g. as part of a ML preprocessing pipeline) for batch processing. This article aims to explore lower-level ways of doing just that, in Python.
One of the most common ways of creating a stack of image tiles I have seen around is w... | [
{
"code": null,
"e": 406,
"s": 172,
"text": "There are plenty of situations where you would need to break down a large image in tiles (e.g. as part of a ML preprocessing pipeline) for batch processing. This article aims to explore lower-level ways of doing just that, in Python."
},
{
"code":... |
Selecting the Best Predictors for Linear Regression in R | by Atinakarim | Towards Data Science | To get the best fit for a multiple regression model, it is important to include the most significant subset of predictors from the dataset. However, it can be quite challenging to understand which predictors, among a large set of predictors, have a significant influence on our target variable. This can be particularly ... | [
{
"code": null,
"e": 590,
"s": 172,
"text": "To get the best fit for a multiple regression model, it is important to include the most significant subset of predictors from the dataset. However, it can be quite challenging to understand which predictors, among a large set of predictors, have a signif... |
Vaadin - Themes | This chapter discusses in detail about another feature of Vaadin, known as Theme. In general, theme means a framework which is customizable at runtime. The content will be dynamic depending on the response received at the server end.
Vaadin provides a cool interface to use a theme with in a second with the help of its ... | [
{
"code": null,
"e": 2003,
"s": 1769,
"text": "This chapter discusses in detail about another feature of Vaadin, known as Theme. In general, theme means a framework which is customizable at runtime. The content will be dynamic depending on the response received at the server end."
},
{
"code... |
Form validation using Django | In this article, we are going to learn how to validate a form in django. Django comes with build-in validators for forms. We can use them in the tutorial to validate forms.
You must familiar with the Django to follow along with this tutorial. If you are not familiar with Django, then this article is not for you.
Set up... | [
{
"code": null,
"e": 1235,
"s": 1062,
"text": "In this article, we are going to learn how to validate a form in django. Django comes with build-in validators for forms. We can use them in the tutorial to validate forms."
},
{
"code": null,
"e": 1376,
"s": 1235,
"text": "You must ... |
How to get connected remote desktop users on computers using PowerShell? | To get the user sessions on the remote computers using PowerShell, we need to use the cmd query command. First of all, we will get the user sessions on the local computer using the below command.
query session
Let’s see what are other supported parameters for the query session command.
PS C:\> query session /?
Display ... | [
{
"code": null,
"e": 1258,
"s": 1062,
"text": "To get the user sessions on the remote computers using PowerShell, we need to use the cmd query command. First of all, we will get the user sessions on the local computer using the below command."
},
{
"code": null,
"e": 1272,
"s": 1258,... |
Beginner’s guide to creating a powerful chatbot | by Louis Teo | Towards Data Science | Are you facing too many standard requests and questions from customers and struggling to cope with them? Are you looking for a way to expand your customer service without incurring much costs?
In my previous story, I shared how I tackled data overburden issues by creating a personal text summarizer to summarize a docum... | [
{
"code": null,
"e": 364,
"s": 171,
"text": "Are you facing too many standard requests and questions from customers and struggling to cope with them? Are you looking for a way to expand your customer service without incurring much costs?"
},
{
"code": null,
"e": 496,
"s": 364,
"t... |
How to remove pagefile on the specific drive using PowerShell? | In this article, we have a pagefile set on E: (System managed) and we need to remove the pagefile from E: So in the below image once we remove it, the pagefile should be “No Paging File”.
To do so using PowerShell, we need to filter the pagefile on a specific drive and need to run the below code.
$pagefileset = Gwmi wi... | [
{
"code": null,
"e": 1250,
"s": 1062,
"text": "In this article, we have a pagefile set on E: (System managed) and we need to remove the pagefile from E: So in the below image once we remove it, the pagefile should be “No Paging File”."
},
{
"code": null,
"e": 1360,
"s": 1250,
"te... |
How do I load an ImageView by URL on Android using kotlin? | This example demonstrates how to load an ImageView by URL on Android using kotlin.
Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.
Step 2 − Add the following code to res/layout/activity_main.xml.
<?xml version="1.0" encoding="utf-8"?>
<Rel... | [
{
"code": null,
"e": 1145,
"s": 1062,
"text": "This example demonstrates how to load an ImageView by URL on Android using kotlin."
},
{
"code": null,
"e": 1274,
"s": 1145,
"text": "Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required det... |
How to Create a Tab Layout in Android App? | This example demonstrates how do I create a Tab Layout in android app.
Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.
Step 2 – Add the following dependency to create a tab layout −
implementation 'com.android.support:design:28.0.0'
Step 3... | [
{
"code": null,
"e": 1133,
"s": 1062,
"text": "This example demonstrates how do I create a Tab Layout in android app."
},
{
"code": null,
"e": 1262,
"s": 1133,
"text": "Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to crea... |
Explain how L1 Normalization can be implemented using scikit-learn library in Python? | The process of converting a range of values into standardized range of values is known as normalization. These values could be between -1 to +1 or 0 to 1. Data can be normalized with the help of subtraction and division as well.
Data fed to the learning algorithm as input should remain consistent and structured. All fe... | [
{
"code": null,
"e": 1291,
"s": 1062,
"text": "The process of converting a range of values into standardized range of values is known as normalization. These values could be between -1 to +1 or 0 to 1. Data can be normalized with the help of subtraction and division as well."
},
{
"code": nu... |
Find largest document size in MongoDB? | To find the largest document size in MongoDB, you need to write a script in the shell.
To understand the concept, let us create a collection with the document. The query to create a collection with a document is as follows −
> db.largestDocumentDemo.insertOne({"StudentName":"John"});
{
"acknowledged" : true,
"ins... | [
{
"code": null,
"e": 1149,
"s": 1062,
"text": "To find the largest document size in MongoDB, you need to write a script in the shell."
},
{
"code": null,
"e": 1287,
"s": 1149,
"text": "To understand the concept, let us create a collection with the document. The query to create a ... |
Building a Rock Paper Scissors AI using Tensorflow and OpenCV with Python | by Manas Acharya | Towards Data Science | Code for this project can be found at my Github
github.com
The basis of this project was to experiment with Deep Learning and Image Classification with the aim of building a simple yet fun iteration of the infamous Rock Paper Scissors game. I’d like to start off by saying this project is a product of my boredom through... | [
{
"code": null,
"e": 220,
"s": 172,
"text": "Code for this project can be found at my Github"
},
{
"code": null,
"e": 231,
"s": 220,
"text": "github.com"
},
{
"code": null,
"e": 755,
"s": 231,
"text": "The basis of this project was to experiment with Deep Lear... |
C# Program to Print the Employees Whose Salary is Between 6000 and 8000 Using LINQ - GeeksforGeeks | 18 Oct, 2021
LINQ is known as Language Integrated Query and it is introduced in .NET 3.5. It gives the ability to .NET languages to generate queries to retrieve data from the data source. It removes the mismatch between programming languages and databases and the syntax used to create a query is the same no matter whic... | [
{
"code": null,
"e": 24302,
"s": 24274,
"text": "\n18 Oct, 2021"
},
{
"code": null,
"e": 24740,
"s": 24302,
"text": "LINQ is known as Language Integrated Query and it is introduced in .NET 3.5. It gives the ability to .NET languages to generate queries to retrieve data from the d... |
Natural Language Processing (NLP) for Beginners | by Behic Guven | Towards Data Science | In this post, I will introduce you to one of the most known artificial intelligence field called Natural Language Processing. After the introduction, I will walk you through a hands-on exercise where we will extract some valuable information from a specific website. For the hands-on project, we will use a specific NLP ... | [
{
"code": null,
"e": 764,
"s": 171,
"text": "In this post, I will introduce you to one of the most known artificial intelligence field called Natural Language Processing. After the introduction, I will walk you through a hands-on exercise where we will extract some valuable information from a specif... |
Arduino - Pulse Width Modulation | Pulse Width Modulation or PWM is a common technique used to vary the width of the pulses in a pulse-train. PWM has many applications such as controlling servos and speed controllers, limiting the effective power of motors and LEDs.
Pulse width modulation is basically, a square wave with a varying high and low time. A b... | [
{
"code": null,
"e": 3102,
"s": 2870,
"text": "Pulse Width Modulation or PWM is a common technique used to vary the width of the pulses in a pulse-train. PWM has many applications such as controlling servos and speed controllers, limiting the effective power of motors and LEDs."
},
{
"code":... |
How to setup MongoDB Java environment? | Visit the MongoDB home page, in the Software (dropdown), select Community Server.
Visit the MongoDB home page, in the Software (dropdown), select Community Server.
In the MongoDB Community Server page, specify the platform details and download the MongoDB server compatible to your platform.
In the MongoDB Community Ser... | [
{
"code": null,
"e": 1144,
"s": 1062,
"text": "Visit the MongoDB home page, in the Software (dropdown), select Community Server."
},
{
"code": null,
"e": 1226,
"s": 1144,
"text": "Visit the MongoDB home page, in the Software (dropdown), select Community Server."
},
{
"cod... |
Surprisingly Effective Way To Name Matching In Python | by Mala Deep | Towards Data Science | Recently I came across this dataset, where I needed to analyze the sales recording of digital products. I got the dataset of having almost 572000 rows and 12 columns. I was so excited to work on such big data. With great enthusiasm, I gave a quick view of data, and I found the same name repeatedly taking different rows... | [
{
"code": null,
"e": 530,
"s": 172,
"text": "Recently I came across this dataset, where I needed to analyze the sales recording of digital products. I got the dataset of having almost 572000 rows and 12 columns. I was so excited to work on such big data. With great enthusiasm, I gave a quick view of... |
MFC - Standard I/O | The MFC library provides its own version of file processing. This is done through a class named CStdioFile. The CStdioFile class is derived from CFile. It can handle the reading and writing of Unicode text files as well as ordinary multi-byte text files.
Here is the list of constructors, which can initialize a CStdioFi... | [
{
"code": null,
"e": 2322,
"s": 2067,
"text": "The MFC library provides its own version of file processing. This is done through a class named CStdioFile. The CStdioFile class is derived from CFile. It can handle the reading and writing of Unicode text files as well as ordinary multi-byte text files... |
SQLAlchemy ORM - Working with Joins | Now that we have two tables, we will see how to create queries on both tables at the same time. To construct a simple implicit join between Customer and Invoice, we can use Query.filter() to equate their related columns together. Below, we load the Customer and Invoice entities at once using this method −
from sqlalche... | [
{
"code": null,
"e": 2647,
"s": 2340,
"text": "Now that we have two tables, we will see how to create queries on both tables at the same time. To construct a simple implicit join between Customer and Invoice, we can use Query.filter() to equate their related columns together. Below, we load the Cust... |
How to track the current location (Latitude and Longitude) in an android device using Kotlin?
| This example demonstrates how to track the current location (Latitude and Longitude) in an android device using Kotlin.
Step 1 − Create a new project in Android Studio, go to File ⇒New Project and fill all required details to create a new project.
Step 2 − Add the following code to res/layout/activity_main.xml.
<?xml v... | [
{
"code": null,
"e": 1182,
"s": 1062,
"text": "This example demonstrates how to track the current location (Latitude and Longitude) in an android device using Kotlin."
},
{
"code": null,
"e": 1310,
"s": 1182,
"text": "Step 1 − Create a new project in Android Studio, go to File ⇒N... |
Image processing using scikit image | by Antony Paulson Chazhoor | Towards Data Science | One of the positive sides of the data science job hunt process is the exposure to challenges and problems in the real world. One such challenge was that of detecting object locations in an image. The project could be approached using two methods.
Computer Vision without using Neural Networks
Computer Vision with Convol... | [
{
"code": null,
"e": 419,
"s": 172,
"text": "One of the positive sides of the data science job hunt process is the exposure to challenges and problems in the real world. One such challenge was that of detecting object locations in an image. The project could be approached using two methods."
},
... |
Socket.IO - Chat Application | Now that we are well acquainted with Socket.IO, let us write a chat application, which we can use to chat on different chat rooms. We will allow users to choose a username and allow them to chat using them. So first, let us set up our HTML file to request for a username −
<!DOCTYPE html>
<html>
<head><title>Hello wo... | [
{
"code": null,
"e": 2138,
"s": 1865,
"text": "Now that we are well acquainted with Socket.IO, let us write a chat application, which we can use to chat on different chat rooms. We will allow users to choose a username and allow them to chat using them. So first, let us set up our HTML file to reque... |
Java Cryptography - Creating a MAC | MAC (Message Authentication Code) algorithm is a symmetric key cryptographic technique to provide message authentication. For establishing MAC process, the sender and receiver share a symmetric key K.
Essentially, a MAC is an encrypted checksum generated on the underlying message that is sent along with a message to en... | [
{
"code": null,
"e": 2254,
"s": 2053,
"text": "MAC (Message Authentication Code) algorithm is a symmetric key cryptographic technique to provide message authentication. For establishing MAC process, the sender and receiver share a symmetric key K."
},
{
"code": null,
"e": 2402,
"s": ... |
How to create boxplot for multiple categories with long names in base R? | In base R, we use boxplot function to create the boxplots but if we have categorical vector and the corresponding numerical vector then the boxplot can be easily created. For this purpose, we should save those vectors in a data frame and use the $ operator and las = 2 argument to create the boxplot as shown in the belo... | [
{
"code": null,
"e": 1393,
"s": 1062,
"text": "In base R, we use boxplot function to create the boxplots but if we have categorical vector and the corresponding numerical vector then the boxplot can be easily created. For this purpose, we should save those vectors in a data frame and use the $ opera... |
Data Types in Go - GeeksforGeeks | 07 Mar, 2022
Data types specify the type of data that a valid Go variable can hold. In Go language, the type is divided into four categories which are as follows:
Basic type: Numbers, strings, and booleans come under this category.Aggregate type: Array and structs come under this category.Reference type: Pointers, slic... | [
{
"code": null,
"e": 24906,
"s": 24878,
"text": "\n07 Mar, 2022"
},
{
"code": null,
"e": 25056,
"s": 24906,
"text": "Data types specify the type of data that a valid Go variable can hold. In Go language, the type is divided into four categories which are as follows:"
},
{
... |
MATLAB - Butterworth Lowpass Filter in Image Processing - GeeksforGeeks | 10 May, 2020
In the field of Image Processing, Butterworth Lowpass Filter (BLPF) is used for image smoothing in the frequency domain. It removes high-frequency noise from a digital image and preserves low-frequency components. The transfer function of BLPF of order is defined as-Where,
is a positive constant. BLPF pa... | [
{
"code": null,
"e": 24798,
"s": 24770,
"text": "\n10 May, 2020"
},
{
"code": null,
"e": 25073,
"s": 24798,
"text": "In the field of Image Processing, Butterworth Lowpass Filter (BLPF) is used for image smoothing in the frequency domain. It removes high-frequency noise from a dig... |
What does the Double Star operator mean in Python? | For numeric data types double asterisk (**) is defined as exponentiation operator
>>> a=10; b=2
>>> a**b
100
>>> a=1.5; b=2.5
>>> a**b
2.7556759606310752
>>> a=3+2j
>>> b=3+5j
>>> a**b
(-0.7851059645317211+2.350232331971346j)
In a function definition, argument with double asterisks as prefix helps in sending multiple k... | [
{
"code": null,
"e": 1144,
"s": 1062,
"text": "For numeric data types double asterisk (**) is defined as exponentiation operator"
},
{
"code": null,
"e": 1288,
"s": 1144,
"text": ">>> a=10; b=2\n>>> a**b\n100\n>>> a=1.5; b=2.5\n>>> a**b\n2.7556759606310752\n>>> a=3+2j\n>>> b=3+5j... |
How do I create an automatically updating GUI using Tkinter? | Using Tkinter, we can create GUI which can be configured for auto-updation. For
this purpose, we will create GUI-based clocks that will automatically get refreshed
when the time changes. We will display the clock along with the day and TimeZone.
First, we will import the tkinter library in the notebook, then we will cr... | [
{
"code": null,
"e": 1308,
"s": 1062,
"text": "Using Tkinter, we can create GUI which can be configured for auto-updation. For\nthis purpose, we will create GUI-based clocks that will automatically get refreshed\nwhen the time changes. We will display the clock along with the day and TimeZone."
},... |
Count ways to reach Nth Stairs by taking 1 and 2 steps with exactly one 3 step - GeeksforGeeks | 05 Jul, 2021
Given a number N which denotes the number of stairs, the task is to reach the Nth stair by taking 1, 2 steps any number of times and taking a step of 3 exactly once. Examples:
Input: N = 4 Output: 2 Explanation: Since a step of 3 has to be taken compulsorily and only once, There are only two possible way... | [
{
"code": null,
"e": 24698,
"s": 24670,
"text": "\n05 Jul, 2021"
},
{
"code": null,
"e": 24876,
"s": 24698,
"text": "Given a number N which denotes the number of stairs, the task is to reach the Nth stair by taking 1, 2 steps any number of times and taking a step of 3 exactly onc... |
Difference between UInt16, UInt32 and UInt64 in C# - GeeksforGeeks | 26 May, 2020
UInt16: This Struct is used to represents 16-bit unsigned integer. The UInt16 can store only positive value only which ranges from 0 to 65535.
Example :
C#
// C# program to show the // UInt16 structusing System;using System.Text; public class GFG{ // Main Method static void Main(string[] args)... | [
{
"code": null,
"e": 24564,
"s": 24536,
"text": "\n26 May, 2020"
},
{
"code": null,
"e": 24707,
"s": 24564,
"text": "UInt16: This Struct is used to represents 16-bit unsigned integer. The UInt16 can store only positive value only which ranges from 0 to 65535."
},
{
"code"... |
How can I delete an element in Selenium using Python? | We can delete an element in Selenium webdriver using Python with the help of JavaScript Executor. Selenium is not capable of modifying the structure of DOM directly.
It has the feature of injecting JavaScript into the webpage and changing the DOM with the help execute_script method. The JavaScript command to be used is... | [
{
"code": null,
"e": 1228,
"s": 1062,
"text": "We can delete an element in Selenium webdriver using Python with the help of JavaScript Executor. Selenium is not capable of modifying the structure of DOM directly."
},
{
"code": null,
"e": 1421,
"s": 1228,
"text": "It has the featu... |
Node.js Child Process - GeeksforGeeks | 10 Jul, 2020
Node.js is a web development framework that offers a variety of modules to work with. Usually, Node.js allows single-threaded, non-blocking performance but running a single thread in a CPU cannot handle increasing workload hence the child_process module can be used to spawn child processes. The child proce... | [
{
"code": null,
"e": 24832,
"s": 24804,
"text": "\n10 Jul, 2020"
},
{
"code": null,
"e": 25207,
"s": 24832,
"text": "Node.js is a web development framework that offers a variety of modules to work with. Usually, Node.js allows single-threaded, non-blocking performance but running... |
C++ Program to Implement Priority Queue | The queue which is implemented as FIFO where insertions are done at one end (rear) and deletions are done from another end (front). The first element that entered is deleted first.
Queue operations are
EnQueue (int data): Insertion at rear end
EnQueue (int data): Insertion at rear end
int DeQueue(): Deletion from front... | [
{
"code": null,
"e": 1243,
"s": 1062,
"text": "The queue which is implemented as FIFO where insertions are done at one end (rear) and deletions are done from another end (front). The first element that entered is deleted first."
},
{
"code": null,
"e": 1264,
"s": 1243,
"text": "Q... |
How to use Alert Component in ReactJS? - GeeksforGeeks | 05 Mar, 2021
Alerts are urgent interruptions, requiring acknowledgment, that inform the user about a situation. Material UI for React has this component available for us, and it is very easy to integrate. We can use Alert Component in ReactJS using the following approach.
Creating React Application And Installing Modul... | [
{
"code": null,
"e": 24851,
"s": 24823,
"text": "\n05 Mar, 2021"
},
{
"code": null,
"e": 25111,
"s": 24851,
"text": "Alerts are urgent interruptions, requiring acknowledgment, that inform the user about a situation. Material UI for React has this component available for us, and i... |
How to check Azure VM Power state using PowerShell? | To check if the VMs are running, deallocated, or stopped using PowerShell, we need to use the - Status parameter.
If you write only the Get-AzVM command to get the VM details, it won’t show up the Azure VM power status default.
To check the Azure VM Power Status,
Get-AzVM -status
The above command will show the Power... | [
{
"code": null,
"e": 1176,
"s": 1062,
"text": "To check if the VMs are running, deallocated, or stopped using PowerShell, we need to use the - Status parameter."
},
{
"code": null,
"e": 1290,
"s": 1176,
"text": "If you write only the Get-AzVM command to get the VM details, it won... |
Gerrit - Push Your Change Set to Gerrit | You can submit the patches for review by using the git-review command. The change set can be pushed to Gerrit, by running the git review -R command as shown in the following screenshot.
The -R option informs git-review not to complete rebase before submitting git changes to Gerrit.
You can submit the code to other bran... | [
{
"code": null,
"e": 2424,
"s": 2238,
"text": "You can submit the patches for review by using the git-review command. The change set can be pushed to Gerrit, by running the git review -R command as shown in the following screenshot."
},
{
"code": null,
"e": 2521,
"s": 2424,
"text... |
Load a Large spaCy model on AWS Lambda | by Hironsan | Towards Data Science | spaCy is a useful tool that allows us to perform many natural language processing tasks. When integrating spaCy into an existing application, it is convenient to provide it as an API using AWS Lambda and API Gateway. However, due to Lambda’s limitations, it is hard to deploy large models.
In this article, I will show y... | [
{
"code": null,
"e": 461,
"s": 171,
"text": "spaCy is a useful tool that allows us to perform many natural language processing tasks. When integrating spaCy into an existing application, it is convenient to provide it as an API using AWS Lambda and API Gateway. However, due to Lambda’s limitations, ... |
Tryit Editor v3.7 | HTML Computer Code
Tryit: HTML code element | [
{
"code": null,
"e": 29,
"s": 10,
"text": "HTML Computer Code"
}
] |
Dart Programming - Map Property isEmpty | Returns true if the Map is empty.
Map.isEmpty
void main() {
var details = {'Usrname':'tom','Password':'pass@123'};
print(details.isEmpty);
var hosts = {};
print(hosts.isEmpty);
}
It will produce the following output −
false
true
44 Lectures
4.5 hours
Sriyank Siddhartha
34 Lecture... | [
{
"code": null,
"e": 2559,
"s": 2525,
"text": "Returns true if the Map is empty."
},
{
"code": null,
"e": 2573,
"s": 2559,
"text": "Map.isEmpty \n"
},
{
"code": null,
"e": 2723,
"s": 2573,
"text": "void main() { \n var details = {'Usrname':'tom','Password':'... |
Pretty displaying tricks for columnar data in Python | by Aadarsh Vadakattu | Towards Data Science | For everyone who has extensively wrangled data using lists, Pandas, or NumPy before, you might have had experienced issues with printing the data in the right way. Especially if there are a lot of columns, displaying the data becomes a hassle. This article shows you how you can print large columnar data in python in a ... | [
{
"code": null,
"e": 506,
"s": 172,
"text": "For everyone who has extensively wrangled data using lists, Pandas, or NumPy before, you might have had experienced issues with printing the data in the right way. Especially if there are a lot of columns, displaying the data becomes a hassle. This articl... |
How can I display an image inside SVG circle in HTML5? | To display an image inside SVG circle, use the <circle> element and set the clipping path. The <clipPath> element is used to define a clipping path. Image in SVG is set using the <image> element.
You can try to run the following code to learn how to display an image inside SVG circle in HTML5
Live Demo
<!DOCTYPE html>
... | [
{
"code": null,
"e": 1258,
"s": 1062,
"text": "To display an image inside SVG circle, use the <circle> element and set the clipping path. The <clipPath> element is used to define a clipping path. Image in SVG is set using the <image> element."
},
{
"code": null,
"e": 1356,
"s": 1258,... |
Find X and Y in Linear Equation | Practice | GeeksforGeeks | Given A, B and N. Find x and y that satisfies equation Ax + By = N. If there's no solution print -1 in place of both x and y.
Note: There are Multiple solutions possible. Find the solution where x is minimum. x and y should both be non-negative.
Example 1:
Input:
A = 2, B = 3, N = 7
Output:
2 1
Explanation:
2*2 + 3*... | [
{
"code": null,
"e": 485,
"s": 238,
"text": "Given A, B and N. Find x and y that satisfies equation Ax + By = N. If there's no solution print -1 in place of both x and y. \nNote: There are Multiple solutions possible. Find the solution where x is minimum. x and y should both be non-negative."
},
... |
How to Insert an Image in HTML Page? | Images can be easily inserted at any section in an HTML page. To insert image in an HTML page, use the <img> tags. It is an empty tag, containing only attributes since the closing tag is not required.
Just keep in mind that you should use the <img> tag inside <body>...</body> tag. The src attribute is used to add the i... | [
{
"code": null,
"e": 1263,
"s": 1062,
"text": "Images can be easily inserted at any section in an HTML page. To insert image in an HTML page, use the <img> tags. It is an empty tag, containing only attributes since the closing tag is not required."
},
{
"code": null,
"e": 1536,
"s": ... |
C++ break statement | The break statement has the following two usages in C++ −
When the break statement is encountered inside a loop, the loop is immediately terminated and program control resumes at the next statement following the loop.
When the break statement is encountered inside a loop, the loop is immediately terminated and program ... | [
{
"code": null,
"e": 2376,
"s": 2318,
"text": "The break statement has the following two usages in C++ −"
},
{
"code": null,
"e": 2536,
"s": 2376,
"text": "When the break statement is encountered inside a loop, the loop is immediately terminated and program control resumes at the... |
Find four elements that sum to a given value | Set 1 (n^3 solution) - GeeksforGeeks | 24 Mar, 2021
Given an array of integers, find all combination of four elements in the array whose sum is equal to a given value X. For example, if the given array is {10, 2, 3, 4, 5, 9, 7, 8} and X = 23, then your function should print “3 5 7 8” (3 + 5 + 7 + 8 = 23).
A Naive Solution is to generate all possible quadru... | [
{
"code": null,
"e": 25158,
"s": 25130,
"text": "\n24 Mar, 2021"
},
{
"code": null,
"e": 25414,
"s": 25158,
"text": "Given an array of integers, find all combination of four elements in the array whose sum is equal to a given value X. For example, if the given array is {10, 2, 3,... |
How to load and modify matrices and vectors in Octave? - GeeksforGeeks | 01 Aug, 2020
In this article, we will see how to load and play with the data inside matrices and vectors in Octave. Here are some basic commands and function to regarding with matrices and vector in Octave :
1. The dimensions of the matrix : We can find the dimensions of a matrix or vector using the size() function.
... | [
{
"code": null,
"e": 24532,
"s": 24504,
"text": "\n01 Aug, 2020"
},
{
"code": null,
"e": 24727,
"s": 24532,
"text": "In this article, we will see how to load and play with the data inside matrices and vectors in Octave. Here are some basic commands and function to regarding with ... |
Spread operator for arrays in JavaScript | The spread (...) syntax allow us to expand an iterable like array in places where 0+ arguments are expected. It allows us to pass a number of parameters as an array to a
function.
Following is the code to implement spread operator for arrays in JavaScript −
Live Demo
<!DOCTYPE html>
<html lang="en">
<head>
<meta chars... | [
{
"code": null,
"e": 1242,
"s": 1062,
"text": "The spread (...) syntax allow us to expand an iterable like array in places where 0+ arguments are expected. It allows us to pass a number of parameters as an array to a\nfunction."
},
{
"code": null,
"e": 1320,
"s": 1242,
"text": "F... |
Command Line arguments in Lua | Handling command line arguments in Lua is one of the key features of any programming language. In Lua, the command line arguments are stored in a table named args and we can use the indices to extract any particular command line argument we require.
lua [options] [script [args]]
The options are −
-e stat− executes stri... | [
{
"code": null,
"e": 1312,
"s": 1062,
"text": "Handling command line arguments in Lua is one of the key features of any programming language. In Lua, the command line arguments are stored in a table named args and we can use the indices to extract any particular command line argument we require."
... |
Print "Even" or "Odd" without using conditional statement - GeeksforGeeks | 17 Aug, 2021
Write a program that accepts a number from the user and prints “Even” if the entered number is even and prints “Odd” if the number is odd. You are not allowed to use any comparison (==, <,>,...etc) or conditional statements (if, else, switch, ternary operator,. Etc).
Method 1 Below is a tricky code can be ... | [
{
"code": null,
"e": 25196,
"s": 25168,
"text": "\n17 Aug, 2021"
},
{
"code": null,
"e": 25464,
"s": 25196,
"text": "Write a program that accepts a number from the user and prints “Even” if the entered number is even and prints “Odd” if the number is odd. You are not allowed to u... |
Mining Twitter Data. Inside Social Media | by Paul Charles Owe | Towards Data Science | Twitter is a microblogging and social networking service where users post content and interact with posts known as “tweets”. Today, Twitter has popularized the use of hashtags as a way to group conversations and allow users to follow conversations on particular topics.
With over 500 million tweets per day, you can imag... | [
{
"code": null,
"e": 442,
"s": 172,
"text": "Twitter is a microblogging and social networking service where users post content and interact with posts known as “tweets”. Today, Twitter has popularized the use of hashtags as a way to group conversations and allow users to follow conversations on part... |
Machine Learning with Python - Extra Trees | It is another extension of bagged decision tree ensemble method. In this method, the random trees are constructed from the samples of the training dataset.
In the following Python recipe, we are going to build extra tree ensemble model by using ExtraTreesClassifier class of sklearn on Pima Indians diabetes dataset.
Fir... | [
{
"code": null,
"e": 2460,
"s": 2304,
"text": "It is another extension of bagged decision tree ensemble method. In this method, the random trees are constructed from the samples of the training dataset."
},
{
"code": null,
"e": 2621,
"s": 2460,
"text": "In the following Python re... |
Machine Learning Model Dashboard. Creating dashboards to interpret... | by Himanshu Sharma | Towards Data Science | Nowadays, creating a machine learning model is easy because of different python libraries that are in the market like sklearn, lazypredict, etc. These libraries are easy to use and used to create different types of models along with different types of visualizations and finding out the model performance. If you don’t k... | [
{
"code": null,
"e": 555,
"s": 172,
"text": "Nowadays, creating a machine learning model is easy because of different python libraries that are in the market like sklearn, lazypredict, etc. These libraries are easy to use and used to create different types of models along with different types of vis... |
How can we remove NOT NULL constraint from a column of an existing MySQL table? | We can remove a NOT NULL constraint from a column of an existing table by using the ALTER TABLE statement.
Suppose we have a table ‘test123’ having a NOT NULL constraint on column ‘ID’ as follows −
mysql> DESCRIBE test123;
+-------+---------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra ... | [
{
"code": null,
"e": 1169,
"s": 1062,
"text": "We can remove a NOT NULL constraint from a column of an existing table by using the ALTER TABLE statement."
},
{
"code": null,
"e": 1260,
"s": 1169,
"text": "Suppose we have a table ‘test123’ having a NOT NULL constraint on column ‘I... |
How to round correlation values in the correlation matrix to zero decimal places in R? | To find the correlation matrix, we simply need to use cor function with the data frame object name. For example, if we have a data frame named as df then the correlation matrix can be found by using cor(df). But the result will have too many decimal places to represent the correlation. If we want to avoid the values af... | [
{
"code": null,
"e": 1429,
"s": 1062,
"text": "To find the correlation matrix, we simply need to use cor function with the data frame object name. For example, if we have a data frame named as df then the correlation matrix can be found by using cor(df). But the result will have too many decimal pla... |
Matlab program to rotate an image 180 degrees clockwise without using function - GeeksforGeeks | 07 Aug, 2020
An image is defined as two-dimensional function, f(x, y), where x and y are spatial (plane) coordinates, and the amplitude of f at any pair of coordinates(x, y) is called the Intensity or the Gray level of the image at that point. When x, y and the intensity values of f are all finite, discrete quantities,... | [
{
"code": null,
"e": 23837,
"s": 23809,
"text": "\n07 Aug, 2020"
},
{
"code": null,
"e": 24173,
"s": 23837,
"text": "An image is defined as two-dimensional function, f(x, y), where x and y are spatial (plane) coordinates, and the amplitude of f at any pair of coordinates(x, y) is... |
du command in Linux with examples - GeeksforGeeks | 17 Oct, 2019
du command, short for disk usage, is used to estimate file space usage.
The du command can be used to track the files and directories which are consuming excessive amount of space on hard disk drive.
Syntax :
du [OPTION]... [FILE]...
du [OPTION]... --files0-from=F
Examples :
du /home/mandeep/test
Output... | [
{
"code": null,
"e": 23737,
"s": 23706,
"text": " \n17 Oct, 2019\n"
},
{
"code": null,
"e": 23937,
"s": 23737,
"text": "du command, short for disk usage, is used to estimate file space usage.\nThe du command can be used to track the files and directories which are consuming exces... |
JavaScript Convert an array to JSON | To convert an array to JSON in JavaScript, the code is as follows −
Live Demo
<!DOCTYPE html>
<html>
<head>
<style>
body {
font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}
</style>
</head>
<body>
<h1>Converting an array to JSON</h1>
<button class="Btn">CLICK HERE</button>
<p class="sample"><... | [
{
"code": null,
"e": 1130,
"s": 1062,
"text": "To convert an array to JSON in JavaScript, the code is as follows −"
},
{
"code": null,
"e": 1141,
"s": 1130,
"text": " Live Demo"
},
{
"code": null,
"e": 1750,
"s": 1141,
"text": "<!DOCTYPE html>\n<html>\n<head>\... |
How To Design A Spam Filtering System with Machine Learning Algorithm | by Sie Huai Gan | Towards Data Science | In my day to day work in Visa as a software developer, email is one of the very important tool for communication. To have effective communication, spam filtering is one of the important feature.
So how do spam filtering system actually works? Can we design something similar from scratch?
The main goal of these two part... | [
{
"code": null,
"e": 367,
"s": 172,
"text": "In my day to day work in Visa as a software developer, email is one of the very important tool for communication. To have effective communication, spam filtering is one of the important feature."
},
{
"code": null,
"e": 461,
"s": 367,
... |
Type Hints in Python — Everything You Need To Know In 5 Minutes | by Dario Radečić | Towards Data Science | Python has always been a dynamically typed language, which means you don’t have to specify data types for variables and function return values. PEP 484 introduced type hints — a way to make Python feel statically typed.
While type hints can help structure your projects better, they are just that — hints — and by defaul... | [
{
"code": null,
"e": 392,
"s": 172,
"text": "Python has always been a dynamically typed language, which means you don’t have to specify data types for variables and function return values. PEP 484 introduced type hints — a way to make Python feel statically typed."
},
{
"code": null,
"e"... |
Word Embeddings: Intuition behind the vector representation of the words | by Oleg Borisov | Towards Data Science | In this article I would like to talk about how the words are commonly represented in Natural Language Processing (NLP), and what are the drawbacks of the “classical” word-vector representation, which word embeddings alleviate. In the practical section of the chapter, I am going to train a simple embedding on a characte... | [
{
"code": null,
"e": 585,
"s": 172,
"text": "In this article I would like to talk about how the words are commonly represented in Natural Language Processing (NLP), and what are the drawbacks of the “classical” word-vector representation, which word embeddings alleviate. In the practical section of ... |
Java 11 - Quick Guide | Java 11 is the first LTS , Long Term Support feature release after Java 8. It followed the Java release cadence introduced Java 10 onwards and it was released on Sept 2018, just six months after Java 10 release.
Java 9 and Java 10 are non-LTS release. Java 11 release is a LTS release.
Following are the major new featur... | [
{
"code": null,
"e": 2285,
"s": 2073,
"text": "Java 11 is the first LTS , Long Term Support feature release after Java 8. It followed the Java release cadence introduced Java 10 onwards and it was released on Sept 2018, just six months after Java 10 release."
},
{
"code": null,
"e": 2359... |
Information Entropy. A layman’s introduction to information... | by A S | Towards Data Science | If you were to watch me cross the street, or watch me play Russian roulette, which one would be more exciting? The possibilities are the same- me living or dying, but we can all agree that the crossing of the street is a bit boring, and the Russian roulette... maybe too exciting. This is partially because we pretty muc... | [
{
"code": null,
"e": 603,
"s": 171,
"text": "If you were to watch me cross the street, or watch me play Russian roulette, which one would be more exciting? The possibilities are the same- me living or dying, but we can all agree that the crossing of the street is a bit boring, and the Russian roulet... |
Java Program to check if a particular key exists in TreeMap | To check if a particular key exists in TreeMap, use the containsKey() method.
Create a TreeMap first and add some elements −
TreeMap<Integer,String> m = new TreeMap<Integer,String>();
m.put(1,"PHP");
m.put(2,"jQuery");
m.put(3,"JavaScript");
m.put(4,"Ruby");
m.put(5,"Java");
m.put(6,"AngularJS");
m.put(7,"ExpressJS");
... | [
{
"code": null,
"e": 1140,
"s": 1062,
"text": "To check if a particular key exists in TreeMap, use the containsKey() method."
},
{
"code": null,
"e": 1187,
"s": 1140,
"text": "Create a TreeMap first and add some elements −"
},
{
"code": null,
"e": 1382,
"s": 1187,... |
How to create a custom unchecked exception in Java? | We can create the custom unchecked exception by extending the RuntimeException in Java.
Unchecked exceptions inherit from the Error class or the RuntimeException class. Many programmers feel that we cannot handle these exceptions in our programs because they represent the type of errors from which programs cannot be ex... | [
{
"code": null,
"e": 1150,
"s": 1062,
"text": "We can create the custom unchecked exception by extending the RuntimeException in Java."
},
{
"code": null,
"e": 1557,
"s": 1150,
"text": "Unchecked exceptions inherit from the Error class or the RuntimeException class. Many programm... |
Python String isalpha() Method | Python string method isalpha() checks whether the string consists of alphabetic characters only.
Following is the syntax for islpha() method −
str.isalpha()
NA
NA
This method returns true if all characters in the string are alphabetic and there is at least one character, false otherwise.
The following example shows t... | [
{
"code": null,
"e": 2342,
"s": 2244,
"text": "Python string method isalpha() checks whether the string consists of alphabetic characters only."
},
{
"code": null,
"e": 2388,
"s": 2342,
"text": "Following is the syntax for islpha() method −"
},
{
"code": null,
"e": 2... |
k-Nearest-Neighbor Classifier From Scratch in Python | by Yassine Hamdaoui | Towards Data Science | “Show me who your friends are and I’ll tell you who you are ?”
The concept of the k-nearest neighbor classifier can hardly be simpler described. This is an old saying, which can be found in many languages and many cultures. It’s also mentioned in other words in the Bible: “He who walks with wise men will be wise, but t... | [
{
"code": null,
"e": 235,
"s": 172,
"text": "“Show me who your friends are and I’ll tell you who you are ?”"
},
{
"code": null,
"e": 550,
"s": 235,
"text": "The concept of the k-nearest neighbor classifier can hardly be simpler described. This is an old saying, which can be found... |
Can we have a private method or private static method in an interface in Java 9?
| Yes, we can have private methods or private static methods in an interface in Java 9. We can use these methods to remove the code redundancy. Private methods can be useful or accessible only within that interface only. We can't access or inherit private methods from one interface to another interface or class.
interfac... | [
{
"code": null,
"e": 1374,
"s": 1062,
"text": "Yes, we can have private methods or private static methods in an interface in Java 9. We can use these methods to remove the code redundancy. Private methods can be useful or accessible only within that interface only. We can't access or inherit private... |
Convert text to uppercase with CSS | To convert text to uppercase with CSS, use the text-transform property with value uppercase.
You can try to run the following code to convert text to uppercase:
<html>
<head>
</head>
<body>
<p>Normal Text</p>
<p style = "text-transform:uppercase;">
Normal Text! This will be in uppercase!
... | [
{
"code": null,
"e": 1155,
"s": 1062,
"text": "To convert text to uppercase with CSS, use the text-transform property with value uppercase."
},
{
"code": null,
"e": 1223,
"s": 1155,
"text": "You can try to run the following code to convert text to uppercase:"
},
{
"code":... |
Docker - HEALTHCHECK Instruction - GeeksforGeeks | 28 Oct, 2020
A HEATHCHECK instruction determines the state of a Docker Container. It determines whether the Container is running in a normal state or not. It performs health checks at regular intervals. The initial state is starting and after a successful checkup, the state becomes healthy. If the test remains unsucces... | [
{
"code": null,
"e": 24148,
"s": 24120,
"text": "\n28 Oct, 2020"
},
{
"code": null,
"e": 24496,
"s": 24148,
"text": "A HEATHCHECK instruction determines the state of a Docker Container. It determines whether the Container is running in a normal state or not. It performs health ch... |
Cordova - Quick Guide | Cordova is a platform for building hybrid mobile applications using HTML, CSS and JavaScript.
The official documentation gives us the definition of the Cordova −
"Apache Cordova is an open-source mobile development framework. It allows you to use standard web technologies such as HTML5, CSS3, and JavaScript for crosspl... | [
{
"code": null,
"e": 2274,
"s": 2180,
"text": "Cordova is a platform for building hybrid mobile applications using HTML, CSS and JavaScript."
},
{
"code": null,
"e": 2342,
"s": 2274,
"text": "The official documentation gives us the definition of the Cordova −"
},
{
"code"... |
Git - Managing Branches | Branch operation allows creating another line of development. We can use this operation to fork off the development process into two different directions. For example, we released a product for 6.0 version and we might want to create a branch so that the development of 7.0 features can be kept separate from 6.0 bug fix... | [
{
"code": null,
"e": 2369,
"s": 2045,
"text": "Branch operation allows creating another line of development. We can use this operation to fork off the development process into two different directions. For example, we released a product for 6.0 version and we might want to create a branch so that th... |
Unlock M-Step in Expectation Maximization from GMM | Towards Data Science | I like the kind of math that can be explained to me like I’m five years old.
My take on explaining, like I’m five years old, the math behind a key component of Gaussian Mixture Models (GMM) known as Expectation-Maximization (EM) and how to translate the concepts to Python. The focus this story is on the M of EM, or M-S... | [
{
"code": null,
"e": 249,
"s": 172,
"text": "I like the kind of math that can be explained to me like I’m five years old."
},
{
"code": null,
"e": 497,
"s": 249,
"text": "My take on explaining, like I’m five years old, the math behind a key component of Gaussian Mixture Models (G... |
Stack in C++ STL - GeeksforGeeks | 31 Aug, 2021
Stacks are a type of container adaptors with LIFO(Last In First Out) type of working, where a new element is added at one end (top) and an element is removed from that end only. Stack uses an encapsulated object of either vector or deque (by default) or list (sequential container class) as its underlying ... | [
{
"code": null,
"e": 37778,
"s": 37750,
"text": "\n31 Aug, 2021"
},
{
"code": null,
"e": 38165,
"s": 37778,
"text": "Stacks are a type of container adaptors with LIFO(Last In First Out) type of working, where a new element is added at one end (top) and an element is removed from ... |
Maximum and Minimum Of Array Elements | Practice | GeeksforGeeks | Given an array A[ ], find maximum and minimum elements from the array.
Input:
The first line of input contains an integer T, denoting the number of testcases. The description of T testcases follows. The first line of each testcase contains a single integer N denoting the size of array. The second line contains N space-... | [
{
"code": null,
"e": 297,
"s": 226,
"text": "Given an array A[ ], find maximum and minimum elements from the array."
},
{
"code": null,
"e": 617,
"s": 297,
"text": "Input:\nThe first line of input contains an integer T, denoting the number of testcases. The description of T testc... |
KnockoutJS - Computed Observables | Computed Observable is a function which is dependent on one or more Observables and automatically updates whenever its underlying Observables (dependencies) change.
Computed Observables can be chained.
this.varName = ko.computed(function(){
...
... // function code
...
},this);
Let us look at the following e... | [
{
"code": null,
"e": 2017,
"s": 1852,
"text": "Computed Observable is a function which is dependent on one or more Observables and automatically updates whenever its underlying Observables (dependencies) change."
},
{
"code": null,
"e": 2054,
"s": 2017,
"text": "Computed Observab... |
Can I get the count of repeated values in a column with MySQL? | Yes, you can use ORDER BY DESC with GROUP BY. Let us first create a table −
mysql> create table DemoTable
-> (
-> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
-> PostMessage varchar(100)
-> );
Query OK, 0 rows affected (0.69 sec)
Insert some records in the table using insert command −
mysql> insert into Demo... | [
{
"code": null,
"e": 1138,
"s": 1062,
"text": "Yes, you can use ORDER BY DESC with GROUP BY. Let us first create a table −"
},
{
"code": null,
"e": 1303,
"s": 1138,
"text": "mysql> create table DemoTable\n -> (\n -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,\n -> PostMessa... |
Selenium - Locators | Locating elements in Selenium WebDriver is performed with the help of findElement() and findElements() methods provided by WebDriver and WebElement class.
findElement() returns a WebElement object based on a specified search criteria or ends up throwing an exception if it does not find any element matching the search c... | [
{
"code": null,
"e": 2030,
"s": 1875,
"text": "Locating elements in Selenium WebDriver is performed with the help of findElement() and findElements() methods provided by WebDriver and WebElement class."
},
{
"code": null,
"e": 2204,
"s": 2030,
"text": "findElement() returns a Web... |
N Queen Problem | This problem is to find an arrangement of N queens on a chess board, such that no queen can attack any other queens on the board.
The chess queens can attack in any direction as horizontal, vertical, horizontal and diagonal way.
A binary matrix is used to display the positions of N Queens, where no queens can attack ot... | [
{
"code": null,
"e": 1192,
"s": 1062,
"text": "This problem is to find an arrangement of N queens on a chess board, such that no queen can attack any other queens on the board."
},
{
"code": null,
"e": 1291,
"s": 1192,
"text": "The chess queens can attack in any direction as hori... |
Display databases in MongoDB | To display number of databases in MongoDB, you need to create atleast one document in a database.
Let’s say, you have created a database, but did not added any document in it. Then in the list of databases that particular database won’t be visible.
Following is the query to create a database −
> use app;
switched to db... | [
{
"code": null,
"e": 1160,
"s": 1062,
"text": "To display number of databases in MongoDB, you need to create atleast one document in a database."
},
{
"code": null,
"e": 1311,
"s": 1160,
"text": "Let’s say, you have created a database, but did not added any document in it. Then i... |
How to validate email address in JavaScript? | To validate email address in JavaScript, check the condition for “@” and “.” i.e. for abc@gmail.com . Let’s try the following code to validate email
Live Demo
<!DOCTYPE html>
<html>
<body>
<script>
var emailID;
function validateEmail(emailID) {
atpos = emailID.indexOf("@");
... | [
{
"code": null,
"e": 1211,
"s": 1062,
"text": "To validate email address in JavaScript, check the condition for “@” and “.” i.e. for abc@gmail.com . Let’s try the following code to validate email"
},
{
"code": null,
"e": 1221,
"s": 1211,
"text": "Live Demo"
},
{
"code": n... |
Find the Second Largest Element in a Linked List - GeeksforGeeks | 29 Jun, 2021
Given a Linked list of integer data. The task is to write a program that efficiently finds the second largest element present in the Linked List.Examples:
Input : List = 12 -> 35 -> 1 -> 10 -> 34 -> 1
Output : The second largest element is 34.
Input : List = 10 -> 5 -> 10
Output : The second largest ele... | [
{
"code": null,
"e": 24567,
"s": 24539,
"text": "\n29 Jun, 2021"
},
{
"code": null,
"e": 24724,
"s": 24567,
"text": "Given a Linked list of integer data. The task is to write a program that efficiently finds the second largest element present in the Linked List.Examples: "
},
... |
PostgreSQL - TRIGGERS | PostgreSQL Triggers are database callback functions, which are automatically performed/invoked when a specified database event occurs.
The following are important points about PostgreSQL triggers −
PostgreSQL trigger can be specified to fire
Before the operation is attempted on a row (before constraints are checked an... | [
{
"code": null,
"e": 2960,
"s": 2825,
"text": "PostgreSQL Triggers are database callback functions, which are automatically performed/invoked when a specified database event occurs."
},
{
"code": null,
"e": 3023,
"s": 2960,
"text": "The following are important points about Postgr... |
Design and Analysis Hill Climbing Algorithm | The algorithms discussed in the previous chapters run systematically. To achieve the goal, one or more previously explored paths toward the solution need to be stored to find the optimal solution.
For many problems, the path to the goal is irrelevant. For example, in N-Queens problem, we don’t need to care about the fi... | [
{
"code": null,
"e": 2796,
"s": 2599,
"text": "The algorithms discussed in the previous chapters run systematically. To achieve the goal, one or more previously explored paths toward the solution need to be stored to find the optimal solution."
},
{
"code": null,
"e": 2999,
"s": 2796... |
Counting passing traffic. Using Yolo3, MotionEye, Python and... | by David Moore | Towards Data Science | If you have been reading my column here on Towards Data Science, you will know that I am on a mission. I wanted to count the number of cars passing my house using Computer Vision and Motion Detection. This article will push on with the work and describe how I tooled up for an initial end to end exercise. Doing Data Sci... | [
{
"code": null,
"e": 548,
"s": 172,
"text": "If you have been reading my column here on Towards Data Science, you will know that I am on a mission. I wanted to count the number of cars passing my house using Computer Vision and Motion Detection. This article will push on with the work and describe h... |
C program to find sum and difference using pointers in function | Suppose we have two numbers a and b. We shall have to define a function that can calculate (a + b) and (a - b) both. But using a function in C, we can return at most one value. To find more than one output, we can use output parameters into function arguments using pointers. Here in this problem we shall update a with ... | [
{
"code": null,
"e": 1486,
"s": 1062,
"text": "Suppose we have two numbers a and b. We shall have to define a function that can calculate (a + b) and (a - b) both. But using a function in C, we can return at most one value. To find more than one output, we can use output parameters into function arg... |
Create an alert message box with Bootstrap | Use the .alert class in Bootstrap to create an alert message box −
Live Demo
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap Example</title>
<link rel = "stylesheet" href = "https://maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css">
<script src = "https://ajax.googleapis.com/ajax/libs/j... | [
{
"code": null,
"e": 1129,
"s": 1062,
"text": "Use the .alert class in Bootstrap to create an alert message box −"
},
{
"code": null,
"e": 1139,
"s": 1129,
"text": "Live Demo"
},
{
"code": null,
"e": 1693,
"s": 1139,
"text": "<!DOCTYPE html>\n<html>\n <head>... |
Palindromic Array | Practice | GeeksforGeeks | Given a Integer array A[] of n elements. Your task is to complete the function PalinArray. Which will return 1 if all the elements of the Array are palindrome otherwise it will return 0.
Example:
Input:
2
5
111 222 333 444 555
3
121 131 20
Output:
1
0
Explanation:
For First test case.
n=5;
A[0] = 111 //which is ... | [
{
"code": null,
"e": 413,
"s": 226,
"text": "Given a Integer array A[] of n elements. Your task is to complete the function PalinArray. Which will return 1 if all the elements of the Array are palindrome otherwise it will return 0."
},
{
"code": null,
"e": 800,
"s": 415,
"text": ... |
Time2Vec for Time Series features encoding | by Marco Cerliani | Towards Data Science | Time is golden information in every Machine Learning problem which engages Time Series. As Data Scientists, we must do our best to extract time patterns and make our data speak themself. During preprocessing, common procedures are for example standardization (stationarity check, autocorrelation removal...), creating an... | [
{
"code": null,
"e": 628,
"s": 47,
"text": "Time is golden information in every Machine Learning problem which engages Time Series. As Data Scientists, we must do our best to extract time patterns and make our data speak themself. During preprocessing, common procedures are for example standardizati... |
How to overwrite a line in a .txt file using Java? | The replaceAll() method of the String class accepts two strings representing a regular expression and a replacement String and replaces the matched values with given String.
The java.util class (constructor) accepts a File, InputStream, Path and, String objects, reads all the primitive data types and Strings (from the ... | [
{
"code": null,
"e": 1236,
"s": 1062,
"text": "The replaceAll() method of the String class accepts two strings representing a regular expression and a replacement String and replaces the matched values with given String."
},
{
"code": null,
"e": 1518,
"s": 1236,
"text": "The java... |
Tryit Editor v3.6 - Show Python | mydb = mysql.connector.connect(
host="localhost",
user="myusername",
password="mypassword",
database="mydatabase"
)
#If this page is executed with no error, the database "mydatabase" exists in your system | [
{
"code": null,
"e": 57,
"s": 25,
"text": "mydb = mysql.connector.connect("
},
{
"code": null,
"e": 77,
"s": 57,
"text": " host=\"localhost\","
},
{
"code": null,
"e": 98,
"s": 77,
"text": " user=\"myusername\","
},
{
"code": null,
"e": 123,
... |
How to convert a string in lower case in Golang? - GeeksforGeeks | 26 Aug, 2019
In Go language, strings are different from other languages like Java, C++, Python, etc. It is a sequence of variable-width characters where each and every character is represented by one or more bytes using UTF-8 Encoding.In Go string, you are allowed to convert a string in the lowercase using ToLower() fu... | [
{
"code": null,
"e": 24418,
"s": 24390,
"text": "\n26 Aug, 2019"
},
{
"code": null,
"e": 24966,
"s": 24418,
"text": "In Go language, strings are different from other languages like Java, C++, Python, etc. It is a sequence of variable-width characters where each and every characte... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.