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To find the average of integers in C#, use the Queryable Average() method.Let’s say the following is our integer array.var arr = new int[] { 10, 17, 25, 30, 40, 55, 60, 70 };Now, use the Average() method to get the average of the elements.double avg = Queryable.Average(arr.AsQueryable());Example Live Demousing System; using System.Linq; class Demo { static void Main() { var arr = new int[] { 10, 17, 25, 30, 40, 55, 60, 70 }; double avg = Queryable.Average(arr.AsQueryable()); Console.WriteLine("Average = "+avg); } }OutputAverage = 38.375
To cast elements, use the Cast() method.The following is our list.List myList = new List { "Mac", "Windows", "Linux", "Solaris" };Now, cast and use the Cast() method with substring() method to display the first two letters of every string in the list.IEnumerable res = myList.AsQueryable().Cast().Select(str => str.Substring(0, 2));Let us see the complete example.Example Live Demousing System; using System.Linq; using System.Collections.Generic; class Demo { static void Main() { List list = new List { "keyboard", "mouse", "joystick", "monitor" }; // getting first 2 letters from every string IEnumerable res = list.AsQueryable().Cast().Select(str => ... Read More
Use the toExponential() method to force a number to display in exponential notation, even if the number is in the range in which JavaScript normally uses standard notation.The following is the parameter −fractionDigits - An integer specifying the number of digits after the decimal point. Defaults to as many digits as necessary to specify the number.ExampleYou can try to run the following code to force a number to display in exponential function − Javascript Method toExponential() var num=77.1234; var ... Read More
The toLocaleString() method returns a string value version of the current number in a format that may vary according to a browser's local settings.ExampleYou can try to run the following code to return a string value version − JavaScript toLocaleString() Method var num = new Number(150.1234); document.write( num.toLocaleString());
To reprsent Int64 as a Octal string in C#, use the ToString() method and set the base as the ToString() method’s second parameter i.e. 8 for Octal.Int64 represents a 64-bit signed integer.Firstly, set an Int64 variable.long val = 986766;Now, convert it to octal string by including 8 as the second parameter.Convert.ToString(val, 8)Example Live Demousing System; class Demo { static void Main() { long val = 986766; Console.WriteLine("Long: "+val); Console.Write("Octal String: "+Convert.ToString(val, 8)); } }OutputLong: 986766 Octal String: 3607216
Orders elements in a sequence using ThenBy() method.We have the following string array.string[] str = { "AAA", "AAAA", "A", "AAAAA", "AAAAAAAAA" };Now, use Lambda Expressions and set a condition inside the ThenBy() method to sort the strings according to the number of characters they have.IEnumerable res = str.AsQueryable() .OrderBy(alp => alp.Length).ThenBy(alp => alp);Example Live Demousing System; using System.Linq; using System.Collections.Generic; public class Demo { public static void Main() { string[] str = { "AAA", "AAAA", "A", "AAAAA", "AAAAAAAAA" }; IEnumerable res = str.AsQueryable() .OrderBy(alp => alp.Length).ThenBy(alp => alp); foreach (string arr ... Read More
To orders elements in a sequence in descending order, use ThenBy() and OrderByDescending.This is our string array.string[] myStr = { "Keyboard", "Laptop", "Mouse", "Monitor" };Now, use OrderByDescending to order element in Descending order. Inside that calculate the length of each string and use Lambda Expressions as well.IEnumerable res = myStr.AsQueryable().OrderByDescending(ch => ch.Length).ThenBy(ch => ch);The following is the example discussed above.Example Live Demousing System; using System.Linq; using System.Collections.Generic; public class Demo { public static void Main() { string[] myStr = { "Keyboard", "Laptop", "Mouse", "Monitor" }; IEnumerable res = myStr.AsQueryable().OrderByDescending(ch => ch.Length).ThenBy(ch => ch); ... Read More
The charCodeAt() method returns a number indicating the Unicode value of the character at the given index. Unicode code points range from 0 to 1, 114, 111. The first 128 Unicode code points are a direct match of the ASCII character encoding.The following parameter is supported by charCodeAt(index) −index − An integer between 0 and 1 less than the length of the string; if unspecified, defaults to 0.ExampleYou can try to run the following code to return a number indicating the Unicode value of the character − JavaScript String charCodeAt() Method ... Read More
Add a node before a given node in C# using the AddBefore() method.Our LinkedList with string nodes.string [] students = {"Henry", "David", "Tom"}; LinkedList list = new LinkedList(students);Now, let’s add node at the end.// adding a node at the end var newNode = list.AddLast("Brad");Use AddBefore() method to add a node before the node added above.list.AddBefore(newNode, "Emma");Example Live Demousing System; using System.Collections.Generic; class Demo { static void Main() { string [] students = {"Henry", "David", "Tom"}; LinkedList list = new LinkedList(students); foreach (var stu in list) { Console.WriteLine(stu); ... Read More
Perform Union on two sequences using the Queryable Union method.The following are our arrays.int[] arr1 = { 29, 40, 15, 55, 70, 30, 90 }; int[] arr2 = { 30, 36, 40, 18, 15, 55, 75 };Now, get the Union of the arrays using the Union method.arr1.AsQueryable().Union(arr2);Example Live Demousing System; using System.Linq; using System.Collections.Generic; public class Demo { public static void Main() { int[] arr1 = { 29, 40, 15, 55, 70, 30, 90 }; int[] arr2 = { 30, 36, 40, 18, 15, 55, 75 }; IEnumerable res = arr1.AsQueryable().Union(arr2); foreach (int a in res) Console.WriteLine("{0} ", a); } }Output29 40 15 55 70 30 90 36 18 75