Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Economics & Finance
In C#, overriding and shadowing are two different mechanisms for changing method behavior in derived classes. Overriding provides true polymorphism using virtual methods, while shadowing (method hiding) creates a new method that hides the base class method without polymorphic behavior. Overriding Overriding allows a subclass to provide a specific implementation of a method that is already defined in its base class. It requires the base class method to be marked as virtual or abstract, and the derived class method to use the override keyword. Method Overriding Base Class ... Read More
The KeyValuePair struct in C# stores a pair of values in a single object, where one value acts as the key and the other as the value. It is commonly used in collections like List and as the element type in dictionaries. KeyValuePair is particularly useful when you need to associate two related pieces of data together without creating a custom class or when working with dictionary enumerations. Syntax Following is the syntax for creating a KeyValuePair − KeyValuePair pair = new KeyValuePair(key, value); Following is the syntax for accessing key and value ... Read More
The GetLowerBound() method of the Array class in C# returns the lower bound of the specified dimension in an array. For most arrays in C#, the lower bound is typically 0, but this method becomes useful when working with arrays that have custom bounds or multi-dimensional arrays. Syntax Following is the syntax for the GetLowerBound() method − public int GetLowerBound(int dimension); Parameters dimension − A zero-based dimension of the array whose lower bound needs to be found. Return Value Returns an integer representing the lower bound of the specified ... Read More
A binary palindrome is a number whose binary representation reads the same forwards and backwards. To check if a number's binary representation is a palindrome, we need to reverse its binary form and compare it with the original. For example, the number 5 has binary representation 101, which reads the same forwards and backwards, making it a binary palindrome. How It Works The algorithm uses bitwise operations to reverse the binary representation − Left shift (=) moves bits to the right, effectively dividing by 2 AND operation (&) checks if the least ... Read More
The Count property of the BitArray class in C# returns the total number of elements (bits) in the BitArray. This is a read-only property that gives you the size of the BitArray, which is determined when the BitArray is created. Syntax Following is the syntax for accessing the Count property − int count = bitArray.Count; Return Value The Count property returns an int value representing the number of bits in the BitArray. Using Count Property with BitArray Let us first create a BitArray and then use the Count property to get ... Read More
In C#, overriding and shadowing (also known as method hiding) are two different mechanisms for modifying inherited behavior. Overriding uses the virtual/override keywords to provide specific implementations of base class methods, while shadowing uses the new keyword to hide base class members entirely. Syntax Following is the syntax for method overriding − // Base class public virtual void MethodName() { } // Derived class public override void MethodName() { } Following is the syntax for method shadowing/hiding − // Base class public void MethodName() { } // Derived class public ... Read More
The AsQueryable() method in C# is used to convert an IEnumerable collection into an IQueryable interface. This conversion enables LINQ query providers to translate queries into optimized database queries or other queryable data sources. The key difference is that IEnumerable executes queries in-memory using LINQ to Objects, while IQueryable can be translated into expression trees for remote execution, such as database queries. Syntax Following is the syntax for using AsQueryable() method − IQueryable queryable = collection.AsQueryable(); The method returns an IQueryable that represents the original collection as a queryable data source. Using ... Read More
Sorting a list in C# can be accomplished using several methods. The List class provides the Sort() method for in-place sorting, while LINQ offers additional sorting capabilities. This article demonstrates various approaches to sort lists in ascending and descending order. Syntax Following is the syntax for the basic Sort() method − list.Sort(); Following is the syntax for sorting with a custom comparer − list.Sort((x, y) => y.CompareTo(x)); // descending order Using List.Sort() Method The Sort() method sorts the elements in the entire list using the default comparer for the ... Read More
The Math.Round() method in C# rounds a value to the nearest integer or to the specified number of fractional digits. This method provides several overloads to handle different data types and rounding scenarios. Syntax The following are the primary syntax forms of Math.Round() − Math.Round(Double) Math.Round(Double, Int32) Math.Round(Double, Int32, MidpointRounding) Math.Round(Double, MidpointRounding) Math.Round(Decimal) Math.Round(Decimal, Int32) Math.Round(Decimal, Int32, MidpointRounding) Math.Round(Decimal, MidpointRounding) Parameters value − The decimal or double number to be rounded. digits − The number of fractional digits in the return value. mode − Specification for how to round value if it ... Read More
A C# program to check if there are K consecutive 1's in a binary number involves counting the longest sequence of consecutive 1's and comparing it with the required count K. This is useful for binary pattern analysis and digital signal processing applications. Approach The algorithm iterates through the binary array, maintaining a counter for consecutive 1's. When a 0 is encountered, the counter resets. The maximum consecutive count is tracked using Math.Max() method. Using Boolean Array Representation A binary number can be represented as a boolean array where true represents 1 and false represents 0 ... Read More