Firstly, set the array with duplicate elements.int[] arr = {    24,    10,    56,    32,    10,    43,    88,    32 };Now declare a Dictionary and loop through the array to get the repeated elements.var d = new Dictionary < int, int > (); foreach(var res in arr) {    if (d.ContainsKey(res))          d[res]++;    else    d[res] = 1; }Example Live Demousing System; using System.Collections.Generic; namespace Demo {    public class Program {       public static void Main(string[] args) {          int[] arr = {   ... Read More

Firstly, set the 12 hr format date.DateTime d = DateTime.Parse("05:00 PM");Now let us convert it into 24-hr format.d.ToString("HH:mm"));The following is the code to covert time from 12 hour to 24 hour format −Example Live Demousing System; namespace Demo {    public class Program {       public static void Main(string[] args) {          DateTime d = DateTime.Parse("05:00 PM");          Console.WriteLine(d.ToString("HH:mm"));       }    } }Output17:00

Take two arrays:int[] arr2 = new int[5]; int[] arr3 = new int[5];Now, if the array element gets the remainder 0 on dividing by 2, it is even. Get those elements and add in another array. This loops through the length of the array:if (arr1[i] % 2 == 0) {    arr2[j] = arr1[i]; }In the else condition, you will get the odd elements. Add them to a separate array and display them individually as shown in the below example:Example Live Demousing System; namespace Demo {    public class Program {       public static void Main(string[] args) {     ... Read More

Let’s say you need to get the value of 10 dollars in INR.Firstly, set the variables: double usd, inr, val;Now set the dollars and convert it to INR.// how many dpllars usd = 10; // current value of US$ val = 69; inr = usd * val;Let us see the complete code −Example Live Demousing System; namespace Demo {    public class Program {       public static void Main(string[] args) {          Double usd, inr, val;          // how many dpllars          usd = 10;          // current value of US$          val = 69;          inr = usd * val;          Console.WriteLine("{0} Dollar = {1} INR", usd, inr);       }    } }Output10 Dollar = 690 INR

We have set an array and a dictionary to get the distinct elements.int[] arr = {    88,    23,    56,    96,    43 }; var d = new Dictionary < int, int > ();Dictionary collection allows us to get the key and value of a list.The following is the code to display distinct elements of a given integer array −Example Live Demousing System; using System.Collections.Generic; namespace Demo {    public class Program {       public static void Main(string[] args) {          int[] arr = {             88,   ... Read More

The following is our array −int[] arr = new int[] {    7,    4,    6,    2 };Let’s say the given intger that should be equal to sum of two other integers is −int res = 8;To get the sum and find the equality.for (int i = 0; i < arr.Length; i++) {    for (int j = 0; j < arr.Length; j++) {       if (i != j) {          int sum = arr[i] + arr[j];          if (sum == res) {             Console.WriteLine(arr[i]); ... Read More

Declare a list.List < string > l = new List < string > ();Now, add elements to the list.// elements l.Add("Accessories"); l.Add("Footwear"); l.Add("Watches");Now convert it into a string.string str = string.Join(" ", l.ToArray());Let us see the final code to convert a list to string in C# −Exampleusing System; using System.Collections.Generic; class Demo {    static void Main() {       List < string > l = new List < string > ();       // elements       l.Add("Accessories");       l.Add("Footwear");       l.Add("Watches");       string str = string.Join(" ", l.ToArray());       Console.WriteLine(str);    } }

To print duplicates from a list of integers, use the ContainsKey.Below, we have first set the integers.int[] arr = {    3,    6,    3,    8,    9,    2,    2 };Then Dictionary collection is used to get the count of duplicate integers.Let us see the code to get duplicate integers.Example Live Demousing System; using System.Collections.Generic; namespace Demo {    public class Program {       public static void Main(string[] args) {          int[] arr = {             3,             6,     ... Read More

To format string literals in C#, use the String.Format method.In the following example, 0 is the index of the object whose string value gets inserted at that particular position −using System; namespace Demo {    class Test {       static void Main(string[] args) {          decimal A = 15.2 m;          string res = String.Format("Temperature = {0}°C.", A);          Console.WriteLine(res);       }    } }In the following example, let us format string for double type.Example Live Demousing System; class Demo {    public static void Main(String[] args) { ... Read More

To format output in C#, let us see examples to format date and double type.Set formatted output for Double type.Example Live Demousing System; class Demo {    public static void Main(String[] args) {       Console.WriteLine("Three decimal places...");       Console.WriteLine(String.Format("{0:0.000}", 987.383));       Console.WriteLine(String.Format("{0:0.000}", 987.38));       Console.WriteLine(String.Format("{0:0.000}", 987.7899));       Console.WriteLine("Thousands Separator...");       Console.WriteLine(String.Format("{0:0, 0.0}", 54567.46));       Console.WriteLine(String.Format("{0:0, 0}", 54567.46));    } }OutputThree decimal places... 987.383 987.380 987.790 Thousands Separator... 54, 567.5 54, 567Set formatted output for DateTimeExample Live Demousing System; static class Demo {    static void Main() ... Read More