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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| <Project Sdk="Microsoft.NET.Sdk"> | ||
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| <PropertyGroup> | ||
| <OutputType>Exe</OutputType> | ||
| <TargetFramework>net7.0</TargetFramework> | ||
| <ImplicitUsings>enable</ImplicitUsings> | ||
| <Nullable>enable</Nullable> | ||
| </PropertyGroup> | ||
|
|
||
| </Project> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,32 @@ | ||
| public class Program | ||
| { | ||
| static void Main() | ||
| { | ||
| // two ways to create Array | ||
| int[] numbers1 = {1, 2, 3, 4, 5}; | ||
| int[] numbers2 = new int[5]; | ||
| numbers2[0] = 1; | ||
| numbers2[1] = 2; | ||
| numbers2[2] = 3; | ||
| numbers2[3] = 4; | ||
| numbers2[4] = 5; | ||
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| // resize array | ||
| Array.Resize(ref numbers1, 10); | ||
| Console.WriteLine(numbers1.Length); | ||
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| // reverse array | ||
| Array.Reverse(numbers2); // 5 4 3 2 1 | ||
| foreach (var number in numbers2) | ||
| { | ||
| Console.WriteLine(number); | ||
| } | ||
|
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| // sort array -> ascending | ||
| Array.Sort(numbers2); | ||
| foreach (var number in numbers2) | ||
| { | ||
| Console.WriteLine(number); | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| <Project Sdk="Microsoft.NET.Sdk"> | ||
|
|
||
| <PropertyGroup> | ||
| <OutputType>Exe</OutputType> | ||
| <TargetFramework>net7.0</TargetFramework> | ||
| <ImplicitUsings>enable</ImplicitUsings> | ||
| <Nullable>enable</Nullable> | ||
| </PropertyGroup> | ||
|
|
||
| </Project> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| using System.Collections; | ||
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| public class Program | ||
| { | ||
| static void Main() | ||
| { | ||
| // ArrayList is not safety | ||
| ArrayList list = new ArrayList() { | ||
| 1, "2", true, 3.4, 123.1f, 111M, new int[] {1, 2, 3} | ||
| }; | ||
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| // must unbox to access element of ArrayList | ||
| int intValue = (int) list[0]; | ||
| Console.WriteLine(intValue); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| <Project Sdk="Microsoft.NET.Sdk"> | ||
|
|
||
| <PropertyGroup> | ||
| <OutputType>Exe</OutputType> | ||
| <TargetFramework>net7.0</TargetFramework> | ||
| <ImplicitUsings>enable</ImplicitUsings> | ||
| <Nullable>enable</Nullable> | ||
| </PropertyGroup> | ||
|
|
||
| </Project> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| public class Program | ||
| { | ||
| static void Main() | ||
| { | ||
| // HashSet is type safety | ||
| // HashSet elements must be unique | ||
| HashSet<int> hs1 = new(); | ||
| hs1.Add(1); | ||
| hs1.Add(2); | ||
| hs1.Add(2); // this will be discarded | ||
| hs1.Add(3); | ||
| hs1.Add(4); | ||
| PrintHashSet(hs1, nameof(hs1)); | ||
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| HashSet<int> hs2 = new HashSet<int>() {3, 4, 5, 6}; | ||
| PrintHashSet(hs2, nameof(hs2)); | ||
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| HashSet<int> except = new HashSet<int>(hs1); | ||
| except.ExceptWith(hs2); | ||
| PrintHashSet(except, nameof(except)); | ||
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| HashSet<int> union = new HashSet<int>(hs1); | ||
| union.UnionWith(hs2); | ||
| PrintHashSet(union, nameof(union)); | ||
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| HashSet<int> intersect = new HashSet<int>(hs1); | ||
| intersect.IntersectWith(hs2); | ||
| PrintHashSet(intersect, nameof(intersect)); | ||
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| Console.WriteLine($"except is subset of union: {except.IsSubsetOf(union)}"); | ||
| Console.WriteLine($"union is superset of except: {union.IsSupersetOf(except)}"); | ||
| } | ||
|
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| static void PrintHashSet(HashSet<int> hashSet, string varName) | ||
| { | ||
| Console.Write(varName + ": "); | ||
| foreach (var hs in hashSet) | ||
| { | ||
| Console.Write($"{hs} "); | ||
| } | ||
| Console.WriteLine(); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| <Project Sdk="Microsoft.NET.Sdk"> | ||
|
|
||
| <PropertyGroup> | ||
| <OutputType>Exe</OutputType> | ||
| <TargetFramework>net7.0</TargetFramework> | ||
| <ImplicitUsings>enable</ImplicitUsings> | ||
| <Nullable>enable</Nullable> | ||
| </PropertyGroup> | ||
|
|
||
| </Project> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| public class Program | ||
| { | ||
| static void Main() | ||
| { | ||
| LinkedList<int> list = new(); | ||
| list.AddLast(2); | ||
| list.AddLast(3); | ||
| list.AddLast(4); | ||
| list.AddFirst(1); | ||
| list.AddLast(6); | ||
| LinkedListNode<int>? node = list.Find(6); | ||
| list.AddBefore(node, 5); | ||
| PrintLinkedList(list, nameof(list)); | ||
| } | ||
|
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| static void PrintLinkedList(LinkedList<int> list, string varName) | ||
| { | ||
| Console.Write(varName + ": "); | ||
| foreach (var item in list) | ||
| { | ||
| Console.Write($"{item} "); | ||
| } | ||
| Console.WriteLine(); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| namespace List; | ||
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| public class Car | ||
| { | ||
| private string _brandName; | ||
| private int _topSpeed; | ||
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| public string BrandName | ||
| { | ||
| get => _brandName; | ||
| set => _brandName = value; | ||
| } | ||
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| public int TopSpeed | ||
| { | ||
| get => _topSpeed; | ||
| set => _topSpeed = value; | ||
| } | ||
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| public Car(string brandName, int topSpeed) | ||
| { | ||
| _brandName = brandName; | ||
| _topSpeed = topSpeed; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,8 @@ | ||
| <Project Sdk="Microsoft.NET.Sdk"> | ||
| <PropertyGroup> | ||
| <OutputType>Exe</OutputType> | ||
| <TargetFramework>net7.0</TargetFramework> | ||
| <ImplicitUsings>enable</ImplicitUsings> | ||
| <Nullable>enable</Nullable> | ||
| </PropertyGroup> | ||
| </Project> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| using List; | ||
|
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| public class Program | ||
| { | ||
| static void Main() | ||
| { | ||
| List<int> listOfNumbers = new List<int>() {2, 4, 1, 9, 3, 5}; | ||
| PrintList(listOfNumbers, nameof(listOfNumbers)); | ||
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| // Ascending | ||
| listOfNumbers.Sort(); | ||
| PrintList(listOfNumbers, nameof(listOfNumbers)); | ||
|
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| listOfNumbers.Reverse(); | ||
| PrintList(listOfNumbers, nameof(listOfNumbers)); | ||
|
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| List<Car> cars = new List<Car>() {new Car("honda", 200), new Car("ferrari", 400), new Car("toyota", 150)}; | ||
|
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| Console.WriteLine(); | ||
| Console.WriteLine("Before sort"); | ||
| foreach (var car in cars) | ||
| { | ||
| Console.WriteLine($"{car.BrandName} - {car.TopSpeed} kmh"); | ||
| } | ||
|
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| Console.WriteLine(); | ||
| Console.WriteLine("After sort"); | ||
| cars.Sort((car1, car2) => car1.TopSpeed.CompareTo(car2.TopSpeed)); // Sort cars based on TopSpeed | ||
| foreach (var car in cars) | ||
| { | ||
| Console.WriteLine($"{car.BrandName} - {car.TopSpeed} kmh"); | ||
| } | ||
| } | ||
|
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| static void PrintList(List<int> list, string varName) | ||
| { | ||
| Console.Write(varName + ": "); | ||
| foreach (var item in list) | ||
| { | ||
| Console.Write($"{item} "); | ||
| } | ||
| Console.WriteLine(); | ||
| } | ||
| } |