Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
Articles by Samual Sam
Page 53 of 151
What are the differences between a multi-dimensional array and jagged array?
Multi-dimensional arrayMulti-dimensional arrays are also called rectangular array. You can define a 3-dimensional array of integer as −int [ , , ] val;Let us see how to define a two-dimensional array.int[,] val = new[3,3] Jagged arrayA Jagged array is an array of arrays. To access an element from it, just mention the index for that particular array.Here, we have a jagged array with 5 array of integers −int[][] a = new int[][]{new int[]{0,0},new int[]{1,2}, new int[]{2,4},new int[]{ 3, 6 }};
Read MoreHow to copy or clone a C# list?
To copy or clone a C# list, firstly set a list −List < string > list1 = new List < string > (); list1.Add("One"); list1.Add("Two"); list1.Add("Three"); list1.Add("Four");Now declare a string array and use the CopyTo() method to copy.string[] arr = new string[20]; list1.CopyTo(arr);Let us see the complete code to copy a list into a one-dimensional array.Exampleusing System; using System.Collections.Generic; using System.Linq; public class Demo { public static void Main() { List < string > list1 = new List < string > (); list1.Add("One"); list1.Add("Two"); list1.Add("Three"); ...
Read MoreWhat is the difference between implicit and explicit type conversion in C#?
The following is the difference between implicit and explicit type conversion −Implicit Type ConversionThese conversions are performed by C# in a type-safe manner.To understand the concept, let us implicitly convert int to long.int val1 = 11000; int val2 = 35600; long sum; sum = val1 + val2;Above, we have two integer variable and when we sum it in a long variable, it won’t show an error. Since the compiler does the implicit conversion on its own.Let us print the values now.Exampleusing System; using System.IO; namespace Demo { class Program { static void Main(string[] args) ...
Read MoreHow to add integer values to a C# list?
To add integer values to a list in C#, use the Add() method.Firstly, declare an integer list in C# −List list1 = new List();Now add integer values −list1.Add(900); list1.Add(400); list1.Add(300);Let us see the complete code −Exampleusing System; using System.Collections.Generic; using System.Linq; using System.Text.RegularExpressions; namespace Demo { public class Program { public static void Main(String[] args) { List list1 = new List(); list1.Add(900); list1.Add(400); list1.Add(300); Console.WriteLine(list1.Count); } } }
Read MoreHow to add read-only property in C#?
A field marked "read-only", can only be set once during the construction of an object. It cannot be changed −Let us see an example.class Employee { readonly int salary; Employee(int salary) { this.salary = salary; } void UpdateSalary() { //salary = 50000; // Compile error } }Above, we have set the salary field as read-only.If you will change it, then a compile-time error will occur. The same is shown in the above example.Let us now see how to check whether an array is read-only or not −Exampleusing ...
Read MoreHow to create a Directory using C#?
To create, move and delete directories in C#, the System.IO.Directory class has methods.Firstly, import the System.IO namespace.Now, use the Director.CreateDirectory() method to create a directory in the specified path −string myDir = @"D:\NEW"; if (!Directory.Exists(myDir)) { Directory.CreateDirectory(myDir); }In the same way, you can create a sub-directory −string mysubdir = @"C:\NEW\my\"; Directory.CreateDirectory(mysubdir);
Read MoreHow to compare two lists for equality in C#?
Set the two lists −List OneList < string > list1 = new List < string > (); list1.Add("A"); list1.Add("B"); list1.Add("C"); list1.Add("D");List TwoList < string > list2 = new List < string > (); list2.Add("C"); list2.Add("D");Now if the following returns different elements, then it would mean the lists are not equal −Exampleusing System; using System.Collections.Generic; using System.Linq; public class Demo { public static void Main() { List < string > list1 = new List < string > (); list1.Add("P"); list1.Add("Q"); list1.Add("R"); Console.WriteLine("First list..."); ...
Read MoreWhat is the difference between function overriding and method hiding in C#?
OverridingUnder overriding, you can define a behavior that's specific to the subclass type, which means a subclass can implement a parent class method based on its requirement.Let us see an example of abstract classes that implements Overriding −Exampleusing System; namespace PolymorphismApplication { abstract class Shape { public abstract int area(); } class Rectangle: Shape { private int length; private int width; public Rectangle( int a = 0, int b = 0) { length = a; ...
Read MoreHow to compare two arrays in C#?
Firstly, set the two arrays to be compared −// two arrays int[] arr = new int[] { 99, 87, 56, 45}; int[] brr = new int[] { 99, 87, 56, 45 };Now, use SequenceEqual() to compare the two arrays −arr.SequenceEqual(brr);The following is the code to compare two arrays −Exampleusing System; using System.Linq; namespace Demo { class Program { static void Main(string[] args) { // two arrays int[] arr = new int[] { 99, 87, 56, 45}; int[] brr = new int[] { 99, 87, 56, 45 }; // compare Console.WriteLine(arr.SequenceEqual(brr)); } } }
Read MoreHow to convert Trigonometric Angles in Radians using C#?
To convert trigonometric angles in Radians, multiply by Math.PI/180. This will convert degrees to radians.The following is the code −Exampleusing System; class Program { static void Main() { Console.WriteLine(Math.Cos(45)); double res = Math.Cos(Math.PI * 45 / 180.0); Console.WriteLine(res); } }Above, we converted using the following formulae −Math.PI * angle / 180.0
Read More