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To match any string with p at the beginning of it with JavaScript RegExp, use the ^p Quantifier −Example JavaScript Regular Expression var myStr = "Welcome to our website. We Learners!"; var reg = /^We/g; var match = myStr.match(reg); document.write(match);
To get the bounds of a three-dimensional array, use the GetUpperBound() GetLowerBound() methods in C#.The parameter to be set under these methods is the dimensions i.e.Let’s say our array is −int[, , ] arr = new int[3, 4, 5];For a three-dimensional arrays, dimension 0.arr.GetUpperBound(0) arr.GetLowerBound(0)For a three-dimensional arrays, dimension 1.arr.GetUpperBound(1) arr.GetLowerBound(1)For a three-dimensional arrays, dimension 2.arr.GetUpperBound(2) arr.GetLowerBound(2)Let us see the entire example.Example Live Demousing System; class Program { static void Main() { int[, , ] arr = new int[3, 4, 5]; Console.WriteLine("Dimension 0 Upper Bound: {0}", arr.GetUpperBound(0).ToString()); Console.WriteLine("Dimension 0 Lower Bound: ... Read More
Let’s say our three-dimensional array is −int[,,] arr = new int[3,4,5];To get the height and width i.e. the rows and columns.Array.GetLength(0) – for rows Array.GetLength(1) – for columnsExample Live Demousing System; class Program { static void Main() { int[,,] arr = new int[3,4,5]; Console.WriteLine(arr.GetLength(0)); Console.WriteLine(arr.GetLength(1)); Console.WriteLine(arr.GetLength(2)); } }Output3 4 5
Skip elements from the end and return the remaining elements using the SkipLast() method.The following is an array.int[] marks = { 45, 88, 50, 90, 95, 85 };Now, let us skip two elements from the end using SkipLast() and Lambda Expressions, but this is done after arranging the elements in descending order.IEnumerable selMarks = marks.AsQueryable().OrderByDescending(s => s).SkipLast(2);Example Live Demousing System; using System.Linq; using System.Collections.Generic; public class Demo { public static void Main() { int[] marks = { 45, 88, 50, 90, 95, 85 }; IEnumerable selMarks = marks.AsQueryable().OrderByDescending(s => s).SkipLast(2); Console.WriteLine("Skipped ... Read More
Bypass elements in an array and return the remaining elements using the SkipWhile() method.The following is our array −int[] marks = { 45, 88, 55, 90, 95, 85 };Now, let’s skip the elements greater than or equal to 60. The condition we have set using Lambda Expression.IEnumerable selMarks = marks.AsQueryable().OrderByDescending(s => s).SkipWhile(s => s >= 60);Example Live Demousing System; using System.Linq; using System.Collections.Generic; public class Demo { public static void Main() { int[] marks = { 45, 88, 55, 90, 95, 85 }; // skips elements above 60 IEnumerable selMarks = ... Read More
The TryParse() method converts the string representation of one or more enumerated constants to an equivalent enumerated object.Firstly, set an enum.enum Vehicle { Bus = 2, Truck = 4, Car = 10 };Now, let us declare a string array and set some values.string[] VehicleList = { "2", "3", "4", "bus", "Truck", "CAR" };Now parse the values accordingly using Enum TryParse() method.Example Live Demousing System; public class Demo { enum Vehicle { Bus = 2, Truck = 4, Car = 10 }; public static void Main() { string[] VehicleList = { "2", "3", "4", "bus", "Truck", "CAR" ... Read More
Set two sequences.double[] arr1 = { 10.2, 15.6, 23.3, 30.5, 50.2 }; double[] arr2 = { 15.6, 30.5, 50.2 };To get the difference between both the above arrays, use Except() method.IEnumerable res = arr1.AsQueryable().Except(arr2);The following is the complete code.Example Live Demousing System; using System.Linq; using System.Collections.Generic; class Demo { static void Main() { double[] arr1 = { 10.2, 15.6, 23.3, 30.5, 50.2 }; double[] arr2 = { 15.6, 30.5, 50.2 }; Console.WriteLine("Initial List..."); foreach(double ele in arr1) { Console.WriteLine(ele); } IEnumerable res = arr1.AsQueryable().Except(arr2); Console.WriteLine("New List..."); foreach (double a in res) { Console.WriteLine(a); } } }OutputInitial List... 10.2 15.6 23.3 30.5 50.2 New List... 10.2 23.3
To match any string containing zero or more p’s with JavaScript RegExp, use the p* Quantifier.ExampleYou can try to run the following code to match any string containing zero or more p’s. Here, p is considered as a number of occurrences − JavaScript Regular Expression var myStr = "Welcome! Wweeeelcome to our website!"; var reg = /el*/g; var match = myStr.match(reg); document.write(match);
To match any string containing a sequence of N p’s with JavaScript RegExp, use the p{N} Quantifier.ExampleYou can try to run the following code to match any string containing a sequence of N p’s − JavaScript Regular Expression var myStr = "Welcome 1, 100, 10000, 1000"; var reg = /\d{3}/g; var match = myStr.match(reg); document.write(match);
Find the sum of elements using the Linq Sum() method.Here’s our list with integer elements.List list = new List { 99, 34, 77, 75, 87, 35, 88};Now find the sum using the Sum() method.list.AsQueryable().Sum();The following is an example to find the sum of elements of a list with integer elements.Example Live Demousing System; using System.Linq; using System.Collections.Generic; public class Demo { public static void Main() { List list = new List { 99, 34, 77, 75, 87, 35, 88}; int res = list.AsQueryable().Sum(); Console.WriteLine("Sum = {0}", res); } }OutputSum = 495