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For validity of a password, you need to recall the concept when your create a password to signup to a website.While creating a password, you may have seen the validation requirements on a website like a password should be strong and have −Min 8 char and max 14 charOne upper caseOne special charOne lower caseNo white spaceLet us see how to check the conditions one by one.Min 8 char and max 14 charif (passwd.Length < 8 || passwd.Length > 14) return false;One upper caseif (!passwd.Any(char.IsUpper)) return false;Atleast one lower caseif (!passwd.Any(char.IsLower)) return false;No white spaceif (passwd.Contains(" ")) return false;Check for ... Read More
To copy or clone a C# list, firstly set a list.List < string > myList = new List < string > (); myList.Add("One"); myList.Add("Two");Now declare a string array and use the CopyTo() method to copy.string[] arr = new string[10]; myList.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 > myList = new List < string > (); myList.Add("One"); myList.Add("Two"); myList.Add("Three"); myList.Add("Four"); ... Read More
Firstly, declare and initialize a jagged array.int[][] arr = new int[][] { new int[] { 0, 0 }, new int[] { 1, 2 }, new int[] { 2, 4 }, new int[] { 3, 6 }, new int[] { 4, 8 } };Now use the length property to get the length.arr.LengthThe following is the complete code −Example Live Demousing System; public class Program { public static void Main() { int[][] arr = new int[][]{new int[]{0,0},new int[]{1,2}, new int[]{2,4},new int[]{ 3, 6 }, new int[]{ 4, 8 } }; // Length Console.WriteLine("Length:"+arr.Length); Console.WriteLine("Upper Bound: {0}",arr.GetUpperBound(0).ToString()); Console.WriteLine("Lower Bound: {0}",arr.GetLowerBound(0).ToString()); Console.WriteLine("Dimensions of Array : " + arr.Rank); } }OutputLength:5 Upper Bound: 4 Lower Bound: 0 Dimensions of Array : 1
Set the first list.int[] arr1 = { 65, 57, 63, 98 };Now, set the second list.int[] arr2 = { 43, 65, 33, 57 };Let us now see the complete code to check if two lists have common elements using == and < operators.Example Live Demousing System; using System.Collections.Generic; using System.Linq; public class Program { public static void Main() { int[] arr1 = { 65, 57, 63, 98 }; ... Read More
Let’s say you need to find the elements in the following list to be greater than 80.int[] arr = new int[] {55, 100, 87, 45};For that, loop until the array length. Here, res = 80 i.e. the given element.for (int i = 0; i < arr.Length; i++) { if(arr[i] res) { Console.WriteLine(arr[i]); } } } } }
Declare a list and add elements.List list = new List(); list.Add(50); list.Add(90); list.Add(50); list.Add(100);Now, use Distinct() method to get the unique elements only.List myList = list.Distinct().ToList();The following is the complete code to remove duplicate elements from a List −Example Live Demousing System; using System.Collections.Generic; using System.Linq; public class Demo { public static void Main() { List < int > list = new List < int > (); list.Add(50); list.Add(90); list.Add(50); list.Add(100); Console.WriteLine("Initial List..."); foreach(int a in list) ... Read More
Firstly, declare a HashSet and add elements −var names = new HashSet(); names.Add("Tim"); names.Add("John"); names.Add("Tom"); names.Add("Kevin");To remove an element, use RemoveWhere.names.RemoveWhere(x => x == "John");Let us see the complete example −Exampleusing System; using System.Collections.Generic; public class Program { public static void Main() { var names = new HashSet < string > (); names.Add("Tim"); names.Add("John"); names.Add("Tom"); names.Add("Kevin"); Console.WriteLine("Initial Set..."); foreach(var val in names) { Console.WriteLine(val); } names.RemoveWhere(x => x ... Read More
Set the list.List < int > list = new List < int > (); list.Add(99); list.Add(49); list.Add(32);To get unique elements.List myList = list.Distinct().ToList();Here is the complete example to display unique values from a list.Example Live Demousing System; using System.Collections.Generic; using System.Linq; public class Demo { public static void Main() { List < int > list = new List < int > (); list.Add(55); list.Add(45); list.Add(55); list.Add(65); list.Add(73); list.Add(24); list.Add(65); Console.WriteLine("Initial List..."); ... Read More
Set a string with duplicate words.string str = "One Two Three One";Above, you can see the word “One” comes twice.To remove dulicate words, you can try to run the following code in C# −Example Live Demousing System; using System.Linq; public class Program { public static void Main() { string str = "One Two Three One"; string[] arr = str.Split(' '); Console.WriteLine(str); var a = from k in arr orderby k select k; Console.WriteLine("After removing duplicate words..."); ... Read More
Using Synchronization, you can synchronize access to resources in multithreaded applications.A mutex can be used to synchronize threads across processes. Use it to prevent the simultaneous execution of a block of code by more than one thread at a time.C# lock statement is used to ensure that a block of code runs without interruption by other threads. A Mutual-exclusion lock is obtained for a given object for the duration of the code block.Thread pool in C# is a collection of threads. It is used to perform tasks in the background. When a thread completes a task, it is sent to ... Read More