Split (1)

train · 76.6k rows

Subsets and Splits

No community queries yet

The top public SQL queries from the community will appear here once available.

title stringlengths 3 221	text stringlengths 17 477k	parsed listlengths 0 3.17k
Confusion Matrix — Clearly Explained \| by Indhumathy Chelliah \| Towards Data Science	In machine learning, the confusion matrix helps to summarize the performance of classification models. From the confusion matrix, we can calculate many metrics like recall, precision,f1 score which is used to evaluate the performance of classification models. In this blog, we will learn about the confusion matrix and t...	[ { "code": null, "e": 432, "s": 172, "text": "In machine learning, the confusion matrix helps to summarize the performance of classification models. From the confusion matrix, we can calculate many metrics like recall, precision,f1 score which is used to evaluate the performance of classification mod...
Start Coding - Java \| Practice \| GeeksforGeeks	When learning a new language, we first learn to output some message. Here, we'll start with the famous Hello World message. Now, here you are given a function to complete. Don't worry about the ins and outs of functions, just add the command (System.out.print("Hello World")) to print Hello World. Example: Input: No inp...	[ { "code": null, "e": 524, "s": 226, "text": "When learning a new language, we first learn to output some message. Here, we'll start with the famous Hello World message. Now, here you are given a function to complete. Don't worry about the ins and outs of functions, just add the command (System.out.p...
PyTorch – FiveCrop Transformation	To crop a given image into four corners and the central crop, we apply FiveCrop() transformation. It's one of the transformations provided by the torchvision.transforms module. This module contains many important transformations that can be used to perform different types of manipulations on the image data. FiveCrop() ...	[ { "code": null, "e": 1371, "s": 1062, "text": "To crop a given image into four corners and the central crop, we apply FiveCrop() transformation. It's one of the transformations provided by the torchvision.transforms module. This module contains many important transformations that can be used to perf...
Path methods in C#	To handle File Paths in C#, use the Path methods. These methods come under System.IO Namespace. Some of them are − Retrieve the extension of the file using the GetExtension() method. For example, .txt, .dat, etc. Retrieve the name of the file using the GetFileName() method. For example, new.txt, details.dat, etc. Retri...	[ { "code": null, "e": 1158, "s": 1062, "text": "To handle File Paths in C#, use the Path methods. These methods come under System.IO Namespace." }, { "code": null, "e": 1177, "s": 1158, "text": "Some of them are −" }, { "code": null, "e": 1245, "s": 1177, "text...
Add two numbers represented by linked lists \| Set 1 - GeeksforGeeks	12 Apr, 2022 Given two numbers represented by two lists, write a function that returns the sum list. The sum list is a list representation of the addition of two input numbers. Example: Input: List1: 5->6->3 // represents number 563 List2: 8->4->2 // represents number 842 Output: Resultant list: 1->4->0->5 // represent...	[ { "code": null, "e": 24231, "s": 24203, "text": "\n12 Apr, 2022" }, { "code": null, "e": 24395, "s": 24231, "text": "Given two numbers represented by two lists, write a function that returns the sum list. The sum list is a list representation of the addition of two input numbers....
C Program To Check For Balanced Brackets In An Expression (Well-Formedness) Using Stack - GeeksforGeeks	14 Dec, 2021 Given an expression string exp, write a program to examine whether the pairs and the orders of “{“, “}”, “(“, “)”, “[“, “]” are correct in exp. Example: Input: exp = “[()]{}{[()()]()}” Output: Balanced Input: exp = “[(])” Output: Not Balanced Algorithm: Declare a character stack S. Now traverse the expr...	[ { "code": null, "e": 25008, "s": 24980, "text": "\n14 Dec, 2021" }, { "code": null, "e": 25152, "s": 25008, "text": "Given an expression string exp, write a program to examine whether the pairs and the orders of “{“, “}”, “(“, “)”, “[“, “]” are correct in exp." }, { "code...
Find numbers a and b that satisfy the given conditions - GeeksforGeeks	07 Mar, 2022 Given an integer n, the task is to find two integers a and b which satisfy the below conditions: a % b = 0a * b > na / b < n a % b = 0 a * b > n a / b < n If no pair satisfies the above conditions then print -1. Note: There can be multiple (a, b) pairs satisfying the above conditions for n.Examples: In...	[ { "code": null, "e": 24716, "s": 24688, "text": "\n07 Mar, 2022" }, { "code": null, "e": 24815, "s": 24716, "text": "Given an integer n, the task is to find two integers a and b which satisfy the below conditions: " }, { "code": null, "e": 24843, "s": 24815, ...
PHP \| file_put_contents() Function - GeeksforGeeks	03 May, 2018 The file_put_contents() function in PHP is an inbuilt function which is used to write a string to a file. The file_put_contents() function checks for the file in which the user wants to write and if the file doesn’t exist, it creates a new file. The path of the file on which the user wants to write and the...	[ { "code": null, "e": 24255, "s": 24227, "text": "\n03 May, 2018" }, { "code": null, "e": 24501, "s": 24255, "text": "The file_put_contents() function in PHP is an inbuilt function which is used to write a string to a file. The file_put_contents() function checks for the file in w...
How to use MongoDB Aggregate to sort?	Use aggregate() and within that to sort, use $sort in MongoDB. Let us create a collection with documents − > db.demo164.insertOne({"StudentAge":24}); { "acknowledged" : true, "insertedId" : ObjectId("5e36883d9e4f06af551997c8") } > db.demo164.insertOne({"StudentAge":25}); { "acknowledged" : true, "insertedId...	[ { "code": null, "e": 1169, "s": 1062, "text": "Use aggregate() and within that to sort, use $sort in MongoDB. Let us create a collection with documents −" }, { "code": null, "e": 1681, "s": 1169, "text": "> db.demo164.insertOne({\"StudentAge\":24});\n{\n \"acknowledged\" : true...
Wavelet Transforms in Python with Google JAX \| by Shailesh Kumar \| Towards Data Science	Wavelet transforms are one of the key tools for signal analysis. They are extensively used in science and engineering. Some of the specific applications include data compression, gait analysis, signal/image de-noising, digital communications, etc. This article focuses on a simple lossy data compression application by u...	[ { "code": null, "e": 577, "s": 172, "text": "Wavelet transforms are one of the key tools for signal analysis. They are extensively used in science and engineering. Some of the specific applications include data compression, gait analysis, signal/image de-noising, digital communications, etc. This ar...
Java if-then-else statement	In Java, if-then-else is represented by the if-else statement. An if statement can be followed by an optional else statement, which executes when the Boolean expression is false. Following is the syntax of an if...else statement − if(Boolean_expression) { // Executes when the Boolean expression is true }else { //...	[ { "code": null, "e": 1125, "s": 1062, "text": "In Java, if-then-else is represented by the if-else statement." }, { "code": null, "e": 1241, "s": 1125, "text": "An if statement can be followed by an optional else statement, which executes when the Boolean expression is false." ...
Maximize GCD of all possible pairs from 1 to N - GeeksforGeeks	05 Apr, 2021 Given an integer N (? 2), the task is to find the maximum GCD among all pairs possible by the integers in the range [1, N]. Example: Input: N = 5 Output: 2 Explanation : GCD(1, 2) : 1 GCD(1, 3) : 1 GCD(1, 4) : 1 GCD(1, 5) : 1 GCD(2, 3) : 1 GCD(2, 4) : 2 GCD(2, 5) : 1 GCD(3, 4) : 1 GCD(3, 5) : 1 GCD(4, 5) ...	[ { "code": null, "e": 24511, "s": 24483, "text": "\n05 Apr, 2021" }, { "code": null, "e": 24635, "s": 24511, "text": "Given an integer N (? 2), the task is to find the maximum GCD among all pairs possible by the integers in the range [1, N]." }, { "code": null, "e": 24...
A Simple Way of Automating and Scheduling SQL Server Database Replication between Different Servers \| by Christopher Tao \| Towards Data Science	Microsoft SQL Server provides SQL Server Replication features that we can utilise to set a database as Publisher and another one is Subscriber, so we can replicate the database with customisations in the scripts. However, sometimes the requirements may not be that complex so that SQL Server Replication could be a littl...	[ { "code": null, "e": 378, "s": 46, "text": "Microsoft SQL Server provides SQL Server Replication features that we can utilise to set a database as Publisher and another one is Subscriber, so we can replicate the database with customisations in the scripts. However, sometimes the requirements may not...
Count of substrings of a binary string containing K ones - GeeksforGeeks	13 Sep, 2021 Given a binary string of length N and an integer K, we need to find out how many substrings of this string are exist which contains exactly K ones. Examples: Input : s = “10010” K = 1 Output : 9 The 9 substrings containing one 1 are, “1”, “10”, “100”, “001”, “01”, “1”, “10”, “0010” and “010” In t...	[ { "code": null, "e": 25306, "s": 25278, "text": "\n13 Sep, 2021" }, { "code": null, "e": 25454, "s": 25306, "text": "Given a binary string of length N and an integer K, we need to find out how many substrings of this string are exist which contains exactly K ones." }, { "...
Recursive program to insert a star between pair of identical characters - GeeksforGeeks	27 May, 2021 Given a string with repeated characters, we have to insert a star i.e.” * “ between pair of adjacent identical characters using recursion. Examples: Input : aabb Output : aabb Input : xxxy Output : xxxy Approach: If there is an empty string then simply return. This forms our base condition. Check...	[ { "code": null, "e": 24241, "s": 24213, "text": "\n27 May, 2021" }, { "code": null, "e": 24381, "s": 24241, "text": "Given a string with repeated characters, we have to insert a star i.e.” * “ between pair of adjacent identical characters using recursion. " }, { "code": n...
Groovy - Maps get()	Look up the key in this Map and return the corresponding value. If there is no entry in this Map for the key, then return null. Object get(Object key) Key − Key to search for retrieval. The key-value pair or NULL if it does not exist. Following is an example of the usage of this method − class Example { static voi...	[ { "code": null, "e": 2366, "s": 2238, "text": "Look up the key in this Map and return the corresponding value. If there is no entry in this Map for the key, then return null." }, { "code": null, "e": 2390, "s": 2366, "text": "Object get(Object key)\n" }, { "code": null, ...
How to align objects vertically when working with grids in CSS ? - GeeksforGeeks	07 Jan, 2020 CSS grid layout is one of the strongest layout of CSS. The grid layout is 2-D which means it can handle both rows and columns, unlike flexbox which is 1-D. To align objects apply CSS to the parent element which becomes the grid container and the element’s child which becomes the items in the grid. Approach...	[ { "code": null, "e": 25376, "s": 25348, "text": "\n07 Jan, 2020" }, { "code": null, "e": 25675, "s": 25376, "text": "CSS grid layout is one of the strongest layout of CSS. The grid layout is 2-D which means it can handle both rows and columns, unlike flexbox which is 1-D. To alig...
How to do a batch insert in MySQL?	To do a batch insert, we need to use all column names with parenthesis, separated by ‘,’. Let us see an example. First, we will create a table. The following is the CREATE command to create a table. mysql> CREATE table MultipleRecordWithValues - > ( - > id int, - > name varchar(100) - > ); Query OK, 0 rows ...	[ { "code": null, "e": 1152, "s": 1062, "text": "To do a batch insert, we need to use all column names with parenthesis, separated by ‘,’." }, { "code": null, "e": 1261, "s": 1152, "text": "Let us see an example. First, we will create a table. The following is the CREATE command to...
How can I make a horizontal ListView in Android?	This example demonstrates about How can I make a horizontal ListView in Android. 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"?> <Lin...	[ { "code": null, "e": 1143, "s": 1062, "text": "This example demonstrates about How can I make a horizontal ListView in Android." }, { "code": null, "e": 1273, "s": 1143, "text": "Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required deta...
Huffman Coding Algorithm	Huffman coding is a lossless data compression algorithm. In this algorithm, a variable-length code is assigned to input different characters. The code length is related to how frequently characters are used. Most frequent characters have the smallest codes and longer codes for least frequent characters. There are mainl...	[ { "code": null, "e": 1367, "s": 1062, "text": "Huffman coding is a lossless data compression algorithm. In this algorithm, a variable-length code is assigned to input different characters. The code length is related to how frequently characters are used. Most frequent characters have the smallest co...
How to convert JSON to Ordereddict?	24 Jan, 2021 The full-form of JSON is JavaScript Object Notation. It means that a script (executable) file which is made of text in a programming language, is used to store and transfer the data. Python supports JSON through a built-in package called json. To use this feature, we import the json package in Python scrip...	[ { "code": null, "e": 53, "s": 25, "text": "\n24 Jan, 2021" }, { "code": null, "e": 509, "s": 53, "text": "The full-form of JSON is JavaScript Object Notation. It means that a script (executable) file which is made of text in a programming language, is used to store and transfer t...
Justify the given Text based on the given width of each line	27 Feb, 2020 Given a string str and width of each line as L, the task is to justify the string such that each line of justified text is of length L with help of space (‘ ‘) and the last line should be left-justified. Examples: Input: str = “GeeksforGeek is the best computer science portal for geeks.”, L = 16Output:Geek...	[ { "code": null, "e": 52, "s": 24, "text": "\n27 Feb, 2020" }, { "code": null, "e": 256, "s": 52, "text": "Given a string str and width of each line as L, the task is to justify the string such that each line of justified text is of length L with help of space (‘ ‘) and the last l...
RadioButton in Tkinter \| Python	16 Feb, 2021 The Radiobutton is a standard Tkinter widget used to implement one-of-many selections. Radiobuttons can contain text or images, and you can associate a Python function or method with each button. When the button is pressed, Tkinter automatically calls that function or method.Syntax: button = Radiobutton(...	[ { "code": null, "e": 54, "s": 26, "text": "\n16 Feb, 2021" }, { "code": null, "e": 340, "s": 54, "text": "The Radiobutton is a standard Tkinter widget used to implement one-of-many selections. Radiobuttons can contain text or images, and you can associate a Python function or met...
JavaScript \| Const	07 Dec, 2021 ES2015 (ES6) introduced const keyword to define a new variable. The difference in const variable declaration than others is that it cannot be reassigned. Properties: Cannot be reassigned. Block Scope It can be assign on the variable on declaration line. Primitive value. The property of a const object can b...	[ { "code": null, "e": 54, "s": 26, "text": "\n07 Dec, 2021" }, { "code": null, "e": 208, "s": 54, "text": "ES2015 (ES6) introduced const keyword to define a new variable. The difference in const variable declaration than others is that it cannot be reassigned." }, { "code"...
C++ Utility Library - make_pair Function	It constructs a pair object with its first element set to x and its second element set to y. Following is the declaration for std::make_pair function. template <class T1, class T2> pair<T1,T2> make_pair (T1 x, T2 y); template <class T1, class T2> pair<V1,V2> make_pair (T1&& x, T2&& y); x, y − These are two value...	[ { "code": null, "e": 2696, "s": 2603, "text": "It constructs a pair object with its first element set to x and its second element set to y." }, { "code": null, "e": 2754, "s": 2696, "text": "Following is the declaration for std::make_pair function." }, { "code": null, ...
Why is indentation important in Python?	Many a times it is required to treat more than one statements in a program as a block. Different programming languages use different techniques to define scope and extent of block of statements in constructs like class, function, conditional and loop. In C and C++ for example, statements inside curly brackets are treat...	[ { "code": null, "e": 1458, "s": 1062, "text": "Many a times it is required to treat more than one statements in a program as a block. Different programming languages use different techniques to define scope and extent of block of statements in constructs like class, function, conditional and loop. I...
ES6 - Variables	A variable, by definition, is “a named space in the memory” that stores values. In other words, it acts as a container for values in a program. Variable names are called identifiers. Following are the naming rules for an identifier − Identifiers cannot be keywords. Identifiers cannot be keywords. Identifiers can contai...	[ { "code": null, "e": 2511, "s": 2277, "text": "A variable, by definition, is “a named space in the memory” that stores values. In other words, it acts as a container for values in a program. Variable names are called identifiers. Following are the naming rules for an identifier −" }, { "code...
HBase - Scan	The scan command is used to view the data in HTable. Using the scan command, you can get the table data. Its syntax is as follows: scan ‘<table name>’ The following example shows how to read data from a table using the scan command. Here we are reading the emp table. hbase(main):010:0> scan 'emp' ROW ...	[ { "code": null, "e": 2168, "s": 2037, "text": "The scan command is used to view the data in HTable. Using the scan command, you can get the table data. Its syntax is as follows:" }, { "code": null, "e": 2190, "s": 2168, "text": "scan ‘<table name>’ \n" }, { "code": null, ...
Single level inheritance in Java	Single Level inheritance - A class inherits properties from a single class. For example, Class B inherits Class A. Live Demo class Shape { public void display() { System.out.println("Inside display"); } } class Rectangle extends Shape { public void area() { System.out.println("Inside area"); } ...	[ { "code": null, "e": 1177, "s": 1062, "text": "Single Level inheritance - A class inherits properties from a single class. For example, Class B inherits Class A." }, { "code": null, "e": 1188, "s": 1177, "text": " Live Demo" }, { "code": null, "e": 1543, "s": 1188...
PHP $_FILES	The global predefined variable $_FILES is an associative array containing items uploaded via HTTP POST method. Uploading a file requires HTTP POST method form with enctype attribute set to multipart/form-data. $HTTP_POST_FILES also contains the same information, but is not a superglobal, and now been deprecated The _FI...	[ { "code": null, "e": 1272, "s": 1062, "text": "The global predefined variable $_FILES is an associative array containing items uploaded via HTTP POST method. Uploading a file requires HTTP POST method form with enctype attribute set to multipart/form-data." }, { "code": null, "e": 1375, ...
How to detect integer overflow in C/C++?	The only safe way is to check for overflow before it occurs. There are some hacky ways of checking for integer overflow though. So if you're aiming for detecting overflow in unsigned int addition, you can check if the result is actually lesser than either values added. So for example, unsigned int x, y; unsigned int va...	[ { "code": null, "e": 1348, "s": 1062, "text": "The only safe way is to check for overflow before it occurs. There are some hacky ways of checking for integer overflow though. So if you're aiming for detecting overflow in unsigned int addition, you can check if the result is actually lesser than eith...
AsEnumerable() in C#	To cast a specific type to its IEnumerable equivalent, use the AsEnumerable() method. It is an extension method. The following is our array − int[] arr = new int[5]; arr[0] = 10; arr[1] = 20; arr[2] = 30; arr[3] = 40; arr[4] = 50; Now, get the IEnumerable equivalent. arr.AsEnumerable(); Live Demo using System; using S...	[ { "code": null, "e": 1175, "s": 1062, "text": "To cast a specific type to its IEnumerable equivalent, use the AsEnumerable() method. It is an extension method." }, { "code": null, "e": 1204, "s": 1175, "text": "The following is our array −" }, { "code": null, "e": 129...
Tutorial: Create a Python CLI Package via Traitlets \| by Joél Collins \| Towards Data Science	If you’re like me... You love writing scripts to speed up your workflow You’re fluent in Python and basically nothing else. Annoyingly, python can feel a little clunky in the terminal. If you want to run python scripts from command line, you either need to... Assign a different command (usually a bash alias) to every s...	[ { "code": null, "e": 192, "s": 171, "text": "If you’re like me..." }, { "code": null, "e": 243, "s": 192, "text": "You love writing scripts to speed up your workflow" }, { "code": null, "e": 295, "s": 243, "text": "You’re fluent in Python and basically nothing...
What is use of fluent Validation in C# and how to use in C#?	FluentValidation is a .NET library for building strongly-typed validation rules. It Uses a fluent interface and lambda expressions for building validation rules. It helps clean up your domain code and make it more cohesive, as well as giving you a single place to look for validation logic To make use of fluent validati...	[ { "code": null, "e": 1352, "s": 1062, "text": "FluentValidation is a .NET library for building strongly-typed validation rules. It Uses a fluent interface and lambda expressions for building validation rules. It helps clean up your domain code and make it more cohesive, as well as giving you a singl...
Julia Programming - Plotting	Julia has various packages for plotting and before starting making plots, we need to first download and install some of them as follows − (@v1.5) pkg> add Plots PyPlot GR UnicodePlots The package Plots is a high-level plotting package, also referred to as ‘back-ends’ interfaces with other plotting packages. To start us...	[ { "code": null, "e": 2216, "s": 2078, "text": "Julia has various packages for plotting and before starting making plots, we need to first download and install some of them as follows −" }, { "code": null, "e": 2262, "s": 2216, "text": "(@v1.5) pkg> add Plots PyPlot GR UnicodePlot...
Plotly - Polar Chart and Radar Chart	In this chapter, we will learn how Polar Chart and Radar Chart can be made with the help Plotly. First of all, let us study about polar chart. Polar Chart is a common variation of circular graphs. It is useful when relationships between data points can be visualized most easily in terms of radiuses and angles. In Polar...	[ { "code": null, "e": 2457, "s": 2360, "text": "In this chapter, we will learn how Polar Chart and Radar Chart can be made with the help Plotly." }, { "code": null, "e": 2503, "s": 2457, "text": "First of all, let us study about polar chart." }, { "code": null, "e": 26...
isupper() function in C Language	The function isupper() is used to check that the character is uppercase or not. It returns non-zero value if successful otherwise, return zero. It is declared in “ctype.h” header file. Here is the syntax of isupper() in C language, int isupper(int character); Here, character − The character which is to be checked. Here...	[ { "code": null, "e": 1247, "s": 1062, "text": "The function isupper() is used to check that the character is uppercase or not. It returns non-zero value if successful otherwise, return zero. It is declared in “ctype.h” header file." }, { "code": null, "e": 1294, "s": 1247, "text"...
Python - Convert Index Dictionary to List - GeeksforGeeks	03 Jul, 2020 Sometimes, while working with Python dictionaries, we can have a problem in which we have keys mapped with values, where keys represent list index where value has to be placed. This kind of problem can have application in all data domains such as web development. Let’s discuss certain ways in which this ta...	[ { "code": null, "e": 23933, "s": 23905, "text": "\n03 Jul, 2020" }, { "code": null, "e": 24261, "s": 23933, "text": "Sometimes, while working with Python dictionaries, we can have a problem in which we have keys mapped with values, where keys represent list index where value has ...
Risk	Risk can be defined as the probability of an event, hazard, accident, threat or situation occurring and its undesirable consequences. It is a factor that could result in negative consequences and usually expressed as the product of impact and likelihood. Risk = Probability of the event occurring x Impact if it did happ...	[ { "code": null, "e": 6000, "s": 5745, "text": "Risk can be defined as the probability of an event, hazard, accident, threat or situation occurring and its undesirable consequences. It is a factor that could result in negative consequences and usually expressed as the product of impact and likelihood...
Java - The LinkedHashMap Class	This class extends HashMap and maintains a linked list of the entries in the map, in the order in which they were inserted. This allows insertion-order iteration over the map. That is, when iterating a LinkedHashMap, the elements will be returned in the order in which they were inserted. You can also create a LinkedHas...	[ { "code": null, "e": 2666, "s": 2377, "text": "This class extends HashMap and maintains a linked list of the entries in the map, in the order in which they were inserted. This allows insertion-order iteration over the map. That is, when iterating a LinkedHashMap, the elements will be returned in the...