Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
In this DSA problem, we will learn to create a circular linked list and delete the node from the beginning of that. The circular linked list connects the last node with the first node. To remove the first node from the linked list, we can make the second node a root node, and connect the last node with the second node. Problem statement We have given a circular linked list. We need to delete the starting node of the linked list. Sample examples Input 1 -> 2 -> 3 -> 4 -> 8 -> 10 Output 2 -> ... Read More
Java is one of the most used programming languages nowadays, as it contains advanced features and functionalities. In every new version of Java, its developers add new features and functionalities, and an integer cache is one feature introduced in Java 5. In this tutorial, we will understand what integer cache is in Java and the importance of that in programming. What is Integer Cache in Java? From the 'cache' word, readers can guess that we are talking about storing integer in the memory and reusing it whenever required. Yes, you have guessed correctly. But the question comes to mind is ... Read More
In this problem, we will learn to implement the equivalent algorithm of C++'s lower_bound() method in Java to find the lower bound index of a given element in the sorted array. Lower bound − The lower bound is the index in the sorted array, such that the index contains the minimum element greater or equal to the targeted element. We can use the searching algorithms to find the lower bound of any element in the sorted array without using built-in methods. Here, we will use the linear search, iterative, and recursive binary search to get the lower bound of any ... Read More
Delegates and interfaces are both powerful constructs in C# that allow for flexible and extensible code. While they serve different purposes, they can sometimes be used to achieve similar ends, leading to confusion about when to use one over the other. This article will elucidate the differences and similarities between delegates and interfaces, and provide guidelines for their use. Understanding Delegates in C# A delegate in C# is a type that defines a method signature, and can hold a reference to a method. When a delegate is invoked, it calls the method it references. This provides a way to pass ... Read More
Default interface methods are a game-changing feature that allow developers to add new methods to an interface without breaking existing implementations. This article will explain default interface methods in C#, showing you how to use them effectively in your own code. Traditional Interface Methods in C# Traditionally, interfaces in C# could only contain declarations of methods, properties, events, or indexers, but not their implementations. Any class or struct that implemented the interface had to provide the implementation for each member of the interface. Introduction to Default Interface Methods Default interface methods were introduced to address the limitation of traditional interfaces. ... Read More
Language Integrated Query (LINQ) is a powerful tool in C# for data manipulation, allowing for efficient and expressive data access and manipulation. One of the operations you can perform with LINQ is the cross join operation, which is common in database queries. This article will guide you through implementing a cross join in LINQ. Understanding Cross Join Cross join, also known as Cartesian product, is a type of join operation that matches each row of the first table with every row of the second table. If the first table has n rows and the second table has m rows, the ... Read More
In C#, manipulating collections is a frequent operation, with indexing being a crucial part of this process. Traditionally, indexing in C# starts from the beginning of a collection, which is very intuitive and straightforward. This article will guide you through the process of creating an index from a specified position at the start of a collection in C#. Understanding Indexing in C# In C#, you can access elements in an array or a collection using an index. The indexing process starts from the beginning of the collection, with the first element at index 0. Each subsequent element has an index ... Read More
Indexing is a crucial part of any programming language, and C# is no exception. In C# 8.0, a new feature was introduced to create an index from the end of a collection at a specified position. This feature adds a new dimension to array and list manipulation in C#. This article will guide you through the process of creating an index from the end of a collection at a specified index position in C#. Understanding Indexing in C# Before proceeding, let's understand what indexing means in C#. In C#, you can access elements in an array or a collection using ... Read More
Language Integrated Query (LINQ) is a powerful feature in C# that allows for efficient data manipulation. One common task when working with collections is determining the number of elements in a sequence. This article will guide you through using LINQ to count the number of elements in a sequence, a fundamental operation for data analysis and manipulation. Understanding LINQ and Sequences LINQ is a set of technologies based on the integration of query capabilities directly into the C# language. With LINQ, you can query data from a variety of sources, including arrays, enumerable classes, XML documents, relational databases, and third-party ... Read More
Enumerations (enums) are a powerful feature in C# that allows you to define a type with a set of named constants. Often, you may need to convert an enum value to a string for display purposes or to process it further. This article will guide you through the process of converting an enumerated type to a string according to a specified format in C#. Understanding Enumerated Types in C# Before proceeding with the conversion process, let's first understand what enumerated types are. An enumerated type, or enum, is a distinct type that consists of a set of named constants. Here's ... Read More