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Articles by karthikeya Boyini
Page 67 of 143
Print a 2 D Array or Matrix in C#
First, set a two-dimensional array.int[, ] arr = new int[10, 10];Now, get the elements from the user −for (i = 0; i < m; i++) { for (j = 0; j < n; j++) { arr[i, j] = Convert.ToInt16(Console.ReadLine()); } }Let us see the complete example to display the matrix.Exampleusing System; using System.Linq; class Demo { static void Main() { int m, n, i, j; // rows and columns of the matrix+ m = 2; n = 2; ...
Read MoreHow to remove items from a list in C#?
Firstly, set a list and add elements.List myList = new List(); myList.Add("Jennings"); myList.Add("James"); myList.Add("Chris");Let’s say you need to delete the element “James” now. For that, use the Remove() method.myList.Remove("James");Here is the complete code.Exampleusing System.Collections.Generic; using System; class Program { static void Main() { List myList = new List(); myList.Add("Jennings"); myList.Add("James"); myList.Add("Chris"); Console.WriteLine("Initial List..."); foreach(string str in myList) { Console.WriteLine(str); } myList.Remove("James"); Console.WriteLine("New List..."); ...
Read MoreC# program to print all sublists of a list
Firstly, create a list −List list = new List();The string here is “xyz” for which we will find the sublists. While looping we will declare another list, that would generate sublists on every true iteration −for (int i = 1; i < str.Length; i++) { list.Add(str[i - 1].ToString()); List newlist = new List(); for (int j = 0; j < list.Count; j++) { string list2 = list[j] + str[i]; newlist.Add(list2); } list.AddRange(newlist); }The following is the complete code −Exampleusing System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Demo { ...
Read MoreHow to print the contents of array horizontally using C#?
Set an array.int[] array = new int[] { 50, 100, 150, 200, 250, 300, 350, 400 };Now, if you will print this array using a loop and new line, then the arrays will be visible vertically.To work it horizontally, use the Join() method and set spaces to separate array elements.string.Join(" ", array)Let us see the complete code.Exampleusing System; using System.Linq; using System.IO; class Program { static void Main() { int[] array = new int[] { 50, 100, 150, 200, 250, 300, 350, 400 }; Console.WriteLine(string.Join(" ", array)); } }Output50 100 150 200 250 300 350 400
Read MoreLambda Expressions in C#
A lambda expression in C# describes a pattern.Lambda Expressions has the token => in an expression context. This is read as “goes to” operator and used when a lambda expression is declared.Here, we are finding the first occurrence of the element greater than 50 from a list.list.FindIndex(x => x > 50);Above the token => is used. The same is shown below −Exampleusing System; using System.Collections.Generic; class Demo { static void Main() { List list = new List { 44, 6, 34, 23, 78 }; int res = list.FindIndex(x => x > 50); Console.WriteLine("Index: "+res); } }OutputIndex: 4
Read MoreC# Program to remove whitespaces in a string
Let’s say the following is the string −StringBuilder str = new StringBuilder("Patience is key!");To remove whitespace, you can use the replace method.str.Replace(" ", "");Let us see the complete code.Exampleusing System; using System.Text; class Demo { static void Main() { // Initial String StringBuilder str = new StringBuilder("Patience is key!"); Console.WriteLine(str.ToString()); // Replace str.Replace(" ", ""); // New String Console.WriteLine(str.ToString()); Console.ReadLine(); } }OutputPatience is key! Patienceiskey!
Read MoreRepresent Int32 as a Binary String in C#
To represent Int632as a Binary string in C#, use the ToString() method and set the base as the ToString() method’s second parameter i.e. 2 for Binary.Int32 represents a 32-bit signed integer.Firstly, set an Int64 variable −int val = 30;Now, convert it to a binary string by including 2 as the second parameter.Convert.ToString(val, 2)Exampleusing System; class Demo { static void Main() { int val = 30; Console.WriteLine("Integer: "+val); Console.Write("Binary String: "+Convert.ToString(val, 2)); } }OutputInteger: 30 Binary String: 11110
Read MoreC# Round-trip ("R") Format Specifier
This round-trip ("R") format specifier is supported for the Single, Double, and BigInteger types.It ensures that a numeric value converted to a string is parsed back into the same numeric value.Let us see an example −Firstly, we have a double variable.double doubleVal = 0.91234582637;Now, use the ToString() method: and set the Round-trip format specifier.doubleVal.ToString("R", CultureInfo.InvariantCulture);Let us see the complete example −Exampleusing System; using System.Numerics; using System.Globalization; class Demo { static void Main() { double doubleVal = 0.91234582637; string str = doubleVal.ToString("R", CultureInfo.InvariantCulture); double resRound = double.Parse(str, CultureInfo.InvariantCulture); ...
Read MoreBootstrap .has-error class
The has-error class allows you to set error for input.You can try to run the following code to implement the has-error classExample Bootstrap Example Input with error
Read MoreTernary Operator in C#
Ternary operator is a Conditional operator in C#. It takes three arguments and evaluates a Boolean expression.For example −b = (a == 1) ? 20 : 30;Above, if the first operand evaluates to true (1), the second operand is evaluated. If the first operand evaluates to false (0), the third operand is evaluated.The following is an example −Exampleusing System; namespace DEMO { class Program { static void Main(string[] args) { int a, b; a = 10; b = (a == 1) ? 20 : 30; Console.WriteLine("Value of b is {0}", b); b = (a == 10) ? 20 : 30; Console.WriteLine("Value of b is {0}", b); Console.ReadLine(); } } }OutputValue of b is 30 Value of b is 20
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