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In Git, local and remote repositories work together to manage and collaborate on code. A local repository is a copy of a Git repository that resides on your local machine and a remote repository is a copy of the Git repository hosted on a remote server or a cloud-based service (e.g., GitHub, GitLab, Bitbucket, or a private server). Pushing your local repository to a remote repository is a fundamental part of using Git, especially when working in a team or on a project that requires collaboration, backup, or version control. To push a local branch to a remote repository in ... Read More
Problem DescriptionIn this problem, we are given an array of integers, and our task is to calculate the absolute sum of its elements. The absolute sum means the sum of the absolute values of all the array elements. In this article, we are going to learn how to compute the absolute sum of an array's elements using C++.Example 1Input:arr = {-3, 2, -7, 4}Output:16Explanation:The absolute values of the array elements are:| -3 | = 3, | 2 | = 2, | -7 | = 7, | 4 | = 4The sum of these absolute values is: 3 + 2 + ... Read More
In combinatorics, nCr and nPr are essential formulas used to calculate combinations and permutations. They represent the number of ways to select and arrange objects from a set. nCr refers to combinations, where order does not matter, while nPr refers to permutations, where order does matter. The permutation refers to the arrangement of objects in a specific order.A combination refers to the selection of objects without taking order in reference. In this article, we are going to learn how we can calculate nCr and nPr in Python using different approaches. The formula for nCr and nPr The formulas ... Read More
MySQL's ENUM data type is used to define a specific set of values in a column making it easier to manage and maintain data consistency. GROUP BY and WHERE() function In MySQL WHERE clause is used to filter the rows based on a condition before grouping them. The GROUP BY clause groups rows with identical values in specified columns, and can be used with functions like SUM, COUNT, and AVG. Together they enable focused data analysis by filtering and grouping efficiently. Syntax Following is the syntax to filter the data on certain conditions and to eliminate duplicate records. SELECT column1, ... Read More
Triggers in MySQL enable us to describe automatic operations that would be conducted as a result of specific actions happening within tables, such as INSERT, UPDATE, or DELETE. Triggers are very useful to automate repetitive database operations and maintain data integrity. Inserting a Row into Another Table with a Trigger Inserting a row into another table using trigger can be achieved by using the CREATE TRIGGER command followed by the INSERT INTO statement in the trigger's code. This will be capable of adding a row to the second table automatically whenever an action on the first table is performed. ... Read More
In MySQL, the ENUM data type is used to limit column values to a specified set of options which is useful for categories like colors, status, and gender. Sometimes, it is helpful to display these ENUM values as more descriptive like converting 'P' to "pass" and 'F' to "Fail". The IF() function in MySQL makes this easy by allowing conditional logic within SQL queries. The example below will demonstrate how to use the IF() function to convert ENUM values into user-friendly. Example To understand first let us create a table, DemoTable, which contains an ENUM column UserGender to store ... Read More
In MySQL, triggers allow automatic execution of specified actions in response to INSERT, UPDATE or DELETE events on a table. Often, multiple triggers may be created for the same event and action time (e.g.; multiple BEFORE INSERT triggers on the same table). By default, MySQL invokes these triggers in the order they have created. However, the FOLLOWS and PRECEDES option allows control over the sequence of execution which can be critical in complex data handling. In this article, we will explore how to set the order of multiple triggers for the same event and action ... Read More
In MySQL, the ENUM data type enables you to define a column using only a collection of predetermined values. Each value in the ENUM list is assigned a position number known as an index (which begins with 1). These index numbers represent the positions of the values in the list, not the actual data. For example, if the ENUM list is ('Male', 'Female', 'Other'), Male has an index of 1 while Female has an index of 2 and Other will have an index of 3. This further enables MySQL to store and compare the values more effectively, though actual ... Read More
In this article, we will learn how to find the average of array elements using Python, along with examples to demonstrate the implementation. In this problem, we are given an array of integers, which may contain both positive and negative numbers. Our task is to calculate the average of all elements in the array. Using the Brute Force Approach This is a simple and direct approach. This approach involves manually iterating through each element in the array to calculate the sum. Then, we divide the total sum by the count of elements to get the average. This approach is ... Read More
In this problem, we are given a string, and the task is to toggle the case of each character in the string. This means that all lowercase letters should be converted to uppercase, and all uppercase letters should be converted to lowercase. In this article, we are going to explore different approaches to toggling each character in a string using Python. Let's look at the simple example, where we are going to provide input as "TutorialsPoint". Then output is like "tUTORIALSpOINT" In this case each character is toggled. Such that Uppercase letters become lowercase and lowercase becomes uppercase. Below are ... Read More