Csharp Articles - Page 170 of 237

To format a string, first set the value −int value = 55;Now to format the integer, use ToString and let’s say we need to set it for three places −value.ToString("000");The following is the complete code −Example Live Demousing System; public class Program {    public static void Main() {       int value = 55;       string res = value.ToString("000");       Console.WriteLine(res);    } }Output055

To add padding on the right to a string −const string format = "{0,10}";Now add it to the string −string str1 = string.Format(format, "Marks","Subject");Let us see the complete code −Example Live Demousing System; public class Program {    public static void Main() {       // set right padding       const string format = "{0,10}";       string str1 = string.Format(format, "Marks","Subject");       string str2 = string.Format(format, "95","Maths");       Console.WriteLine(str1);       Console.WriteLine(str2);    } }OutputMarks 95

With C#, you can easily format content and add padding to it.To add padding −const string format = "{0,-5} {1,5}";Now, add the padding to the strings −string str1 = string.Format(format, "Rank","Student"); string str2 = string.Format(format, "2","Tom");Let us see the complete code −Example Live Demousing System; using System.Collections.Generic; public class Program {    public static void Main() {       // set padding       const string format = "{0,-5} {1,5}";       string str1 = string.Format(format, "Rank","Student");       string str2 = string.Format(format, "2","Tom");       Console.WriteLine(str1);       Console.WriteLine(str2);    } }OutputRank Student 2 Tom

Let’s say our string is −var str = "welcome";Use the substring() method and the following, if you want to rotate only some characters. Here, we are rotating only 2 characters −var res = str.Substring(1, str.Length - 1) + str.Substring(0, 2);The following is the complete code −Example Live Demousing System; public class Program {    public static void Main() {       var str = "welcome";       Console.WriteLine("Original String = "+str);       var res = str.Substring(1, str.Length - 1) + str.Substring(0, 2);       Console.WriteLine("Rotating two characters in the String: "+res);    } }OutputOriginal String = welcome Rotating two characters in the String: elcomewe

To merge two sorted arrays, firstly set two sorted arrays −int[] array1 = { 1, 2 }; int[] array2 = { 3, 4 };Now, add it to a list and merge −var list = new List(); for (int i = 0; i < array1.Length; i++) {    list.Add(array1[i]);    list.Add(array2[i]); }Use the ToArray() method to convert back into an array −int[] array3 = list.ToArray();The following is the complete code −Example Live Demousing System; using System.Collections.Generic; public class Program {    public static void Main() {       int[] array1 = { 1, 2 };       int[] array2 ... Read More

Use the UnionWith method in C# to get the union of i.e. unique lements from two collections.Let’s say the following are our Dictionary −Dictionary < string, int > dict1 = new Dictionary < string, int > (); dict1.Add("pencil", 1); dict1.Add("pen", 2); Dictionary < string, int > dict2 = new Dictionary < string, int > (); dict2.Add("pen", 3);Now, use HashSet and UnionWith to get the union −HashSet < string > hSet = new HashSet < string > (dict1.Keys); hSet.UnionWith(dict2.Keys);The following is the complete code −Example Live Demousing System; using System.Collections.Generic; public class Program {    public static void Main() {   ... Read More

The Union method gets the unique elements from both the lists.Let us set two lists −var list1 = new List{12, 65, 88, 45}; var list2 = new List{40, 34, 65};Now get the union of both the lists −var res = list1.Union(list2);The following is the example −Example Live Demousing System.Collections.Generic; using System.Linq; using System; public class Demo {    public static void Main() {       // two lists       var list1 = new List{12, 65, 88, 45};       var list2 = new List{40, 34, 65};       // finding union       var res = list1.Union(list2);       foreach(int i in res) {          Console.WriteLine(i);       }    } }Output12 65 88 45 40 34

Create more than one list −// two lists var list1 = new List{3, 4}; var list2 = new List{1, 2, 3};Now, use the Intersect() method to get the common values −var res = list1.Intersect(list2);The following is the complete code −Example Live Demousing System.Collections.Generic; using System.Linq; using System; public class Demo {    public static void Main() {       // two lists       var list1 = new List{3, 4};       var list2 = new List{1, 2, 3};       // common values       var res = list1.Intersect(list2);       foreach(int i in res) {          Console.WriteLine(i);       }    } }Output3

Set three lists −// three lists var list1 = new List{3, 4}; var list2 = new List{1, 2, 3}; var list3 = new List{2, 5, 6};Now, use the Concat mthod to concat the above lists −var res1 = list1.Concat(list2); var res2 = res1.Concat(list3);Here is the complete code −Example Live Demousing System.Collections.Generic; using System.Linq; using System; public class Demo {    public static void Main() {       // three lists       var list1 = new List{3, 4};       var list2 = new List{1, 2, 3};       var list3 = new List{2, 5, 6};       // concat       var res1 = list1.Concat(list2);       var res2 = res1.Concat(list3);       foreach(int i in res2) {          Console.WriteLine(i);       }    } }Output3 4 1 2 3 2 5 6

Firstly, create lists −//three lists var list1 = new List{3, 4, 5}; var list2 = new List{1, 2, 3, 4, 5}; var list3 = new List{5, 6, 7, 8};Use the union method to get the union of list1 and list2 −var res1 = list1.Union(list2); var res2 = res1.Union(list3);The following is the complete code −Example Live Demousing System.Collections.Generic; using System.Linq; using System; public class Demo {    public static void Main() {       //three lists       var list1 = new List{3, 4, 5};       var list2 = new List{1, 2, 3, 4, 5};       var list3 = new List{5, 6, 7, 8};       // finding union       var res1 = list1.Union(list2);       var res2 = res1.Union(list3);       foreach(int i in res2) {          Console.WriteLine(i);       }    } }Output3 4 5 1 2 6 7 8