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SQL Tryit Editor v1.6	SELECT * FROM Customers WHERE NOT Country='Germany'; Edit the SQL Statement, and click "Run SQL" to see the result. This SQL-Statement is not supported in the WebSQL Database. The example still works, because it uses a modified version of SQL. Your browser does not support WebSQL. Your are now using a light-version o...	[ { "code": null, "e": 24, "s": 0, "text": "SELECT * FROM Customers" }, { "code": null, "e": 53, "s": 24, "text": "WHERE NOT Country='Germany';" }, { "code": null, "e": 55, "s": 53, "text": "" }, { "code": null, "e": 118, "s": 55, "text": "E...
Difference between Perl and Ruby - GeeksforGeeks	02 Nov, 2020 Perl is a general-purpose, high level interpreted and dynamic programming language. It was developed by Larry Wall, in 1987. Perl was originally developed for text processing like extracting the required information from a specified text file and for converting the text file into a different form. Perl sup...	[ { "code": null, "e": 24858, "s": 24830, "text": "\n02 Nov, 2020" }, { "code": null, "e": 25317, "s": 24858, "text": "Perl is a general-purpose, high level interpreted and dynamic programming language. It was developed by Larry Wall, in 1987. Perl was originally developed for text...
Nearest Neighbour Analysis with Geospatial data \| by Abdishakur \| Towards Data Science	Finding the nearest neighbour of an object to another is a common spatial data analysis task. For example, determining the closest service point to your home is an optimisation problem that requires performing Nearest Neighbour Analysis with spatial data. In this tutorial, we perform Nearest Neighbourhood Analysis with...	[ { "code": null, "e": 428, "s": 172, "text": "Finding the nearest neighbour of an object to another is a common spatial data analysis task. For example, determining the closest service point to your home is an optimisation problem that requires performing Nearest Neighbour Analysis with spatial data....
C library function - freopen()	The C library function FILE freopen(const char filename, const char mode, FILE stream) associates a new filename with the given open stream and at the same time closes the old file in the stream. Following is the declaration for freopen() function. FILE freopen(const char filename, const char mode, FILE stream)...	[ { "code": null, "e": 2207, "s": 2007, "text": "The C library function FILE freopen(const char filename, const char mode, FILE stream) associates a new filename with the given open stream and at the same time closes the old file in the stream." }, { "code": null, "e": 2260, "s": 2...
Tryit Editor v3.7	Tryit: JavaScript - change attribute value	[]
How to do groupby on a multiindex in Pandas? - GeeksforGeeks	30 May, 2021 In this article, we will be showing how to use the groupby on a Multiindex Dataframe in Pandas. In Data science when we are performing exploratory data analysis, we often use groupby to group the data of one column based on the other column. So, we are able to analyze how the data of one column is grouped ...	[ { "code": null, "e": 24318, "s": 24290, "text": "\n30 May, 2021" }, { "code": null, "e": 24739, "s": 24318, "text": "In this article, we will be showing how to use the groupby on a Multiindex Dataframe in Pandas. In Data science when we are performing exploratory data analysis, w...
How do you plot a vertical line on a time series plot in Pandas?	Using Pandas, we will create a dataframe and set the vertical lines on the created axes, using axvline lines. Using panda we can create a data frame. Using panda we can create a data frame. Creating a data frame would help to create help. Creating a data frame would help to create help. Using axvline(), add a vertical ...	[ { "code": null, "e": 1172, "s": 1062, "text": "Using Pandas, we will create a dataframe and set the vertical lines on the created axes, using axvline lines." }, { "code": null, "e": 1212, "s": 1172, "text": "Using panda we can create a data frame." }, { "code": null, ...
Program to check if an array is sorted or not (Iterative and Recursive) in C	Given an array arr[] with n number of elements, our task is to check whether the given array is in sorted order or not, If it is in sorted order then print “The array is in sorted order”, else print “The array is not in sorted order”. To solve the above stated problem we can use Iterative or Recursive approach, we will...	[ { "code": null, "e": 1297, "s": 1062, "text": "Given an array arr[] with n number of elements, our task is to check whether the given array is in sorted order or not, If it is in sorted order then print “The array is in sorted order”, else print “The array is not in sorted order”." }, { "cod...
Elixir - Data Types	For using any language, you need to understand the basic data types the language supports. In this chapter, we will discuss 7 basic data types supported by the elixir language: integers, floats, Booleans, atoms, strings, lists and tuples. Elixir, like any other programming language, supports both integers and floats. I...	[ { "code": null, "e": 2421, "s": 2182, "text": "For using any language, you need to understand the basic data types the language supports. In this chapter, we will discuss 7 basic data types supported by the elixir language: integers, floats, Booleans, atoms, strings, lists and tuples." }, { ...
Find total number of distinct years from a string in C++ Program	In this tutorial, we are going to write a program that finds distinct years in the given string. Let's see some examples. We are assuming the date format is DD/MM/YYYY. Input − Sample example with dates 01/11/2020, 02/12/2020, and 03/10/2019. Output − 2 We have two distinct years in the given text 2020 and 2019. We are...	[ { "code": null, "e": 1231, "s": 1062, "text": "In this tutorial, we are going to write a program that finds distinct years in the given string. Let's see some examples. We are assuming the date format is DD/MM/YYYY." }, { "code": null, "e": 1305, "s": 1231, "text": "Input − Sampl...
Algorithms in C++. Complete Search, Greedy, Divide and... \| by Vadim Smolyakov \| Towards Data Science	The purpose of this article is to introduce the reader to four main algorithmic paradigms: complete search, greedy algorithms, divide and conquer, and dynamic programming. Many algorithmic problems can be mapped into one of these four categories and the mastery of each one will make you a better programmer. This articl...	[ { "code": null, "e": 481, "s": 172, "text": "The purpose of this article is to introduce the reader to four main algorithmic paradigms: complete search, greedy algorithms, divide and conquer, and dynamic programming. Many algorithmic problems can be mapped into one of these four categories and the m...
AVRO - Schemas	Avro, being a schema-based serialization utility, accepts schemas as input. In spite of various schemas being available, Avro follows its own standards of defining schemas. These schemas describe the following details − type of file (record by default) location of record name of the record fields in the record with the...	[ { "code": null, "e": 2081, "s": 1861, "text": "Avro, being a schema-based serialization utility, accepts schemas as input. In spite of various schemas being available, Avro follows its own standards of defining schemas. These schemas describe the following details −" }, { "code": null, "...
What is the difference between attributes and properties in python?	In python, everything is an object. And every object has attributes and methods or functions. Attributes are described by data variables for example like name, age, height etc. Properties are special kind of attributes which have getter, setter and delete methods like __get__, __set__ and __delete__ methods. However, t...	[ { "code": null, "e": 1239, "s": 1062, "text": "In python, everything is an object. And every object has attributes and methods or functions. Attributes are described by data variables for example like name, age, height etc." }, { "code": null, "e": 1372, "s": 1239, "text": "Prope...
How to pass Arrays to Methods in Java?	You can pass arrays to a method just like normal variables. When we pass an array to a method as an argument, actually the address of the array in the memory is passed (reference). Therefore, any changes to this array in the method will affect the array. Suppose we have two methods min() and max() which accepts an arra...	[ { "code": null, "e": 1317, "s": 1062, "text": "You can pass arrays to a method just like normal variables. When we pass an array to a method as an argument, actually the address of the array in the memory is passed (reference). Therefore, any changes to this array in the method will affect the array...
Find the longest substring with k unique characters in a given string - GeeksforGeeks	12 Dec, 2021 Given a string you need to print longest possible substring that has exactly M unique characters. If there are more than one substring of longest possible length, then print any one of them. Examples: "aabbcc", k = 1 Max substring can be any one from {"aa" , "bb" , "cc"}. "aabbcc", k = 2 Max substring ca...	[ { "code": null, "e": 25060, "s": 25032, "text": "\n12 Dec, 2021" }, { "code": null, "e": 25251, "s": 25060, "text": "Given a string you need to print longest possible substring that has exactly M unique characters. If there are more than one substring of longest possible length, ...
DateTime.DaysInMonth() Method in C# - GeeksforGeeks	22 Jan, 2019 This method returns the number of days in the specified month and year. This method always interprets month and year as the month and year of the Gregorian calendar even if the Gregorian calendar is not the current culture’s current calendar. Syntax: public static int DaysInMonth (int year, int month); Ret...	[ { "code": null, "e": 23879, "s": 23851, "text": "\n22 Jan, 2019" }, { "code": null, "e": 24122, "s": 23879, "text": "This method returns the number of days in the specified month and year. This method always interprets month and year as the month and year of the Gregorian calenda...
Implementing a Binary Search Tree in JavaScript	A tree is a collection of nodes connected by some edges. Conventionally, each node of a tree holds some data and reference to its children. Binary Search tree is a binary tree in which nodes that have lesser value are stored on the left while the nodes with a higher value are stored at the right. For instance, visual r...	[ { "code": null, "e": 1202, "s": 1062, "text": "A tree is a collection of nodes connected by some edges. Conventionally, each node of a tree\nholds some data and reference to its children." }, { "code": null, "e": 1360, "s": 1202, "text": "Binary Search tree is a binary tree in wh...
How do I get rid of the Python Tkinter root window?	Sometimes, while testing a Tkinter application, we may need to hide the Tkinter default window or frame. There are two general methods through which we can either hide our Tkinter window, or destroy it. The mainloop() keeps running the Tkinter window until it is not closed by external events. In order to destroy the wi...	[ { "code": null, "e": 1265, "s": 1062, "text": "Sometimes, while testing a Tkinter application, we may need to hide the Tkinter\ndefault window or frame. There are two general methods through which we can either hide our Tkinter window, or destroy it." }, { "code": null, "e": 1429, "s...
How to Create a Bland-Altman Plot in R? - GeeksforGeeks	04 Jan, 2022 In this article, we will discuss how to create a Bland-Altman Plot in the R programming Language. The Bland-Altman plot helps us to visualize the difference in measurements between two different measurement techniques. It is used vastly in the field of biochemistry. It is useful for determining how similar...	[ { "code": null, "e": 26487, "s": 26459, "text": "\n04 Jan, 2022" }, { "code": null, "e": 26585, "s": 26487, "text": "In this article, we will discuss how to create a Bland-Altman Plot in the R programming Language." }, { "code": null, "e": 26882, "s": 26585, "...
Reverse the content of a file and store it in another - GeeksforGeeks	16 Jul, 2020 The article explains how to store the reverse of the first text file’s data to a second text file. In this post, it has been assumed that there is no text in the first text file. So we will write some text in a first text file by passing data to reverse function and then in reverse function we will copy th...	[ { "code": null, "e": 25367, "s": 25339, "text": "\n16 Jul, 2020" }, { "code": null, "e": 25718, "s": 25367, "text": "The article explains how to store the reverse of the first text file’s data to a second text file. In this post, it has been assumed that there is no text in the f...
Python - Characters Index occurrences in String - GeeksforGeeks	09 Mar, 2020 Sometimes, while working with Python Strings, we can have a problem in which we need to check for all the characters indices. The position where they occur. This kind of application can come in many domains. Lets discuss certain ways in which this task can be performed. Method #1 : Using set() + regex + li...	[ { "code": null, "e": 26125, "s": 26097, "text": "\n09 Mar, 2020" }, { "code": null, "e": 26396, "s": 26125, "text": "Sometimes, while working with Python Strings, we can have a problem in which we need to check for all the characters indices. The position where they occur. This k...
R - Matrices - GeeksforGeeks	29 Apr, 2022 Matrix is a rectangular arrangement of numbers in rows and columns. In a matrix, as we know rows are the ones that run horizontally and columns are the ones that run vertically. In R programming, matrices are two-dimensional, homogeneous data structures. These are some examples of matrices: To create a ...	[ { "code": null, "e": 30289, "s": 30261, "text": "\n29 Apr, 2022" }, { "code": null, "e": 30582, "s": 30289, "text": "Matrix is a rectangular arrangement of numbers in rows and columns. In a matrix, as we know rows are the ones that run horizontally and columns are the ones that r...
Double isNaN() method in Java with examples - GeeksforGeeks	26 Oct, 2018 The isNaN() method of Java Double class is a built in method in Java returns true if this Double value or the specified double value is Not-a-Number (NaN), or false otherwise. Syntax: public boolean isNaN() or public static boolean isNaN(double val) Parameters: The function accepts a single paramet...	[ { "code": null, "e": 25691, "s": 25663, "text": "\n26 Oct, 2018" }, { "code": null, "e": 25867, "s": 25691, "text": "The isNaN() method of Java Double class is a built in method in Java returns true if this Double value or the specified double value is Not-a-Number (NaN), or fals...
Count the Number of matching characters in a pair of strings - GeeksforGeeks	21 May, 2021 Given a pair of non-empty strings str1 and str2, the task is to count the number of matching characters in these strings. Consider the single count for the character which have duplicates in the strings.Examples: Input: str1 = “abcdef”, str2 = “defghia” Output: 4 Matching characters are: a, d, e, fInput:...	[ { "code": null, "e": 26098, "s": 26070, "text": "\n21 May, 2021" }, { "code": null, "e": 26313, "s": 26098, "text": "Given a pair of non-empty strings str1 and str2, the task is to count the number of matching characters in these strings. Consider the single count for the charact...
How to Append Two Tables and Put the Result in a Table in SQL? - GeeksforGeeks	14 Sep, 2021 Structured Query Language or SQL is a standard Database language that is used to create, maintain and retrieve the data from relational databases like MySQL, Oracle, SQL Server, PostGre, etc. In this article, we will learn how to append two tables and store the result into a new table using UNION, UNION AL...	[ { "code": null, "e": 26197, "s": 26169, "text": "\n14 Sep, 2021" }, { "code": null, "e": 26507, "s": 26197, "text": "Structured Query Language or SQL is a standard Database language that is used to create, maintain and retrieve the data from relational databases like MySQL, Oracl...
How to show or hide element in React ? - GeeksforGeeks	23 Dec, 2020 ReactJS is an entire architecture based on components that are used to create awesome UI and developer components. In any React app, it is all about components, so usually, we have to work with new components to develop a rich user interface. Hence, as per different circumstances we have to hide or show so...	[ { "code": null, "e": 26569, "s": 26541, "text": "\n23 Dec, 2020" }, { "code": null, "e": 26917, "s": 26569, "text": "ReactJS is an entire architecture based on components that are used to create awesome UI and developer components. In any React app, it is all about components, so...
Add one to a number represented as linked list \| Set 2 - GeeksforGeeks	06 Jul, 2021 Given a singly linked list which represents a number where each node contains only one digit [0 – 9]. The task is to add 1 to the number represented by the given linked list and print the new linked list.Examples: Input: 1 -> 2 -> 9 -> 9 -> NULL Output: Original list is : 1 2 9 9 Resultant list is : 1 3 0...	[ { "code": null, "e": 26205, "s": 26177, "text": "\n06 Jul, 2021" }, { "code": null, "e": 26420, "s": 26205, "text": "Given a singly linked list which represents a number where each node contains only one digit [0 – 9]. The task is to add 1 to the number represented by the given l...
Streamline Plots in Plotly using Python - GeeksforGeeks	05 Sep, 2020 A Plotly is a Python library that is used to design graphs, especially interactive graphs. It can plot various graphs and charts like histogram, barplot, boxplot, spreadplot, and many more. It is mainly used in data analysis as well as financial analysis. plotly is an interactive visualization library. In ...	[ { "code": null, "e": 25429, "s": 25401, "text": "\n05 Sep, 2020" }, { "code": null, "e": 25733, "s": 25429, "text": "A Plotly is a Python library that is used to design graphs, especially interactive graphs. It can plot various graphs and charts like histogram, barplot, boxplot, ...
Python - turtle.pencolor() method - GeeksforGeeks	29 Jul, 2021 The turtle module provides turtle graphics primitives, in both object-oriented and procedure-oriented ways. Because it uses tkinter for the underlying graphics, it needs a version of Python installed with Tk support. This method is used to change the color of the ink of the turtle drawing. The default colo...	[ { "code": null, "e": 25562, "s": 25534, "text": "\n29 Jul, 2021" }, { "code": null, "e": 25779, "s": 25562, "text": "The turtle module provides turtle graphics primitives, in both object-oriented and procedure-oriented ways. Because it uses tkinter for the underlying graphics, it...
PostgreSQL - Restore Database - GeeksforGeeks	28 Jul, 2021 Restoring a database, is the action of copying the backed up data and restoring it at its original or new place. We perform restore action on a database so as to return the data to its original state before being lost, stolen or corrupted. There are several causes due to which one needs to restore a databa...	[ { "code": null, "e": 25367, "s": 25339, "text": "\n28 Jul, 2021" }, { "code": null, "e": 26040, "s": 25367, "text": "Restoring a database, is the action of copying the backed up data and restoring it at its original or new place. We perform restore action on a database so as to r...
Fork and Join Constructs in Concurrency	06 Jul, 2020 Prerequisite – Process SynchronizationFork :The fork instruction is the that instruction in the process execution that produces two concurrent executions in a program. One of the concurrent executions starts at statement labeled and other execution is the continuation of the execution at the statement foll...	[ { "code": null, "e": 28, "s": 0, "text": "\n06 Jul, 2020" }, { "code": null, "e": 430, "s": 28, "text": "Prerequisite – Process SynchronizationFork :The fork instruction is the that instruction in the process execution that produces two concurrent executions in a program. One of ...
How to Create a MySQL Sequence?	In MySQL, a sequence refers to a list of integers that is generated in the ascending order beginning from 1 or 0 if specified. Many applications require sequences that will be used to generate unique numbers especially for identification. Examples include customer ID in CRM, employee numbers in HR, and equipment number...	[ { "code": null, "e": 1426, "s": 1187, "text": "In MySQL, a sequence refers to a list of integers that is generated in the ascending order beginning from 1 or 0 if specified. Many applications require sequences that will be used to generate unique numbers especially for identification." }, { ...
Python \| Insert character after every character pair	04 Jul, 2019 Sometimes, we can have a problem in which we need to insert a specific character after pair(second) character. This kind of problem can occur while working with data, that require insertion of commas or any other special character mainly in Machine Learning domain. Let’s discuss certain ways in which this ...	[ { "code": null, "e": 28, "s": 0, "text": "\n04 Jul, 2019" }, { "code": null, "e": 358, "s": 28, "text": "Sometimes, we can have a problem in which we need to insert a specific character after pair(second) character. This kind of problem can occur while working with data, that req...
How to Install Eclipse for C++ on Linux?	16 Oct, 2021 Eclipse is an IDE (integrated development environment) used for building software. It was initially released by IBM on 7 November 2001. Using eclipse, we can develop applications with Java, PHP, and C/C++ programming languages. It’s one of the most popular open-source IDE among developers. In today’s artic...	[ { "code": null, "e": 28, "s": 0, "text": "\n16 Oct, 2021" }, { "code": null, "e": 465, "s": 28, "text": "Eclipse is an IDE (integrated development environment) used for building software. It was initially released by IBM on 7 November 2001. Using eclipse, we can develop applicati...
Create digital clock using Python-Turtle	02 Jul, 2021 Prerequisites: Turtle Programming in PythonTurtle is a special feature of Python. Using Turtle, we can easily draw on a drawing board. First, we import the turtle module. Then create a window, next we create a turtle object and using the turtle methods we can draw in the drawing board.Installation: To inst...	[ { "code": null, "e": 54, "s": 26, "text": "\n02 Jul, 2021" }, { "code": null, "e": 419, "s": 54, "text": "Prerequisites: Turtle Programming in PythonTurtle is a special feature of Python. Using Turtle, we can easily draw on a drawing board. First, we import the turtle module. The...
Python – Regex Lookahead	03 Jan, 2021 Lookahead is used as an assertion in Python regular expressions to determine success or failure whether the pattern is ahead i.e to the right of the parser’s current position. They don’t match anything. Hence, they are called as zero-width assertions. Syntax: # Positive lookahead (?=<lookahead_regex>) Exa...	[ { "code": null, "e": 52, "s": 24, "text": "\n03 Jan, 2021" }, { "code": null, "e": 304, "s": 52, "text": "Lookahead is used as an assertion in Python regular expressions to determine success or failure whether the pattern is ahead i.e to the right of the parser’s current position...
CONVERT_TZ() function in MySQL	25 Nov, 2020 CONVERT_TZ() function in MySQL is used to convert the given DateTime from One time zone to another time zone. If the arguments are invalid, the function will return NULL. Syntax : CONVERT_TZ (dt, from_tz,to_tz) Parameters: This method accepts a three-parameter. dt: The given DateTime which we want to con...	[ { "code": null, "e": 28, "s": 0, "text": "\n25 Nov, 2020" }, { "code": null, "e": 200, "s": 28, "text": "CONVERT_TZ() function in MySQL is used to convert the given DateTime from One time zone to another time zone. If the arguments are invalid, the function will return NULL. " ...
Check if sums of i-th row and i-th column are same in matrix	15 Jun, 2022 Given a matrix mat[][], we have to check if the sum of i-th row is equal to the sum of i-th column or not. Examples: Input : 1 2 3 4 9 5 3 1 0 3 5 6 0 4 5 6 Output : Yes Sums of 1st row = 10 and 1st column are same, i.e., 10 Expected time complexity is O(m x n) where m is a num...	[ { "code": null, "e": 52, "s": 24, "text": "\n15 Jun, 2022" }, { "code": null, "e": 160, "s": 52, "text": "Given a matrix mat[][], we have to check if the sum of i-th row is equal to the sum of i-th column or not. " }, { "code": null, "e": 171, "s": 160, "text"...
Iterators in Java	21 Apr, 2022 A Java Cursor is an Iterator, which is used to iterate or traverse or retrieve a Collection or Stream object’s elements one by one. There are three cursors in Java. IteratorEnumerationListIterator Iterator Enumeration ListIterator Note: SplitIterator can also be considered as a cursor as it is a type of It...	[ { "code": null, "e": 54, "s": 26, "text": "\n21 Apr, 2022" }, { "code": null, "e": 219, "s": 54, "text": "A Java Cursor is an Iterator, which is used to iterate or traverse or retrieve a Collection or Stream object’s elements one by one. There are three cursors in Java." }, {...
How to Detect Idle Time in JavaScript ?	31 Dec, 2019 The idle time is the time that the user doesn’t interact with a web-page. This interaction can be either moving the mouse, clicking on the page or using the keyboard. This time can be detected to execute certain events that may need to occur after a certain period of idle time. Method 1: Using JavaScript: ...	[ { "code": null, "e": 28, "s": 0, "text": "\n31 Dec, 2019" }, { "code": null, "e": 307, "s": 28, "text": "The idle time is the time that the user doesn’t interact with a web-page. This interaction can be either moving the mouse, clicking on the page or using the keyboard. This tim...