Introduction
The article demonstrates the use of various C# helper methods like Sort, Reverse, Clear and Resize.
Learning Objectives
Learn how to use helper methods like Sort() and Reverse()
Learn how to use helper methods like Clear() and Resize()
Prerequisites for Developers
Familiar with arrays.
Familiar with if statement
Experience in running C# code through Visual Studio or Visual Studio Code.
Getting Started
How to use a Sort helper method
Utilize the Array class’s Sort() method to arrange the elements in the array in alphanumeric order. To begin, create a static class file called “ArrayHelperMethods.cs” within the console application. Insert the provided code snippet into this file.
{
/// <summary>
/// Outputs
/// Before Sorting…
/// B14, A11, B12, A13
/// After Sorting…
/// A11, A13, B12, B14
/// </summary>
public static void SortExample()
{
Console.WriteLine(“Before Sorting…”);
string[] pallets = { “B14”, “A11”, “B12”, “A13” };
Console.WriteLine(string.Join(“,”, pallets));
Array.Sort(pallets);
Console.WriteLine(“After Sorting…”);
Console.WriteLine(string.Join(“,”, pallets));
}
}
Execute the code from the main method as follows
ArrayHelperMethods.SortExample();
#endregion
Console Output
B14,A11,B12,A13
After Sorting…
A11,A13,B12,B14
How to use the Reverse helper method
In the following example, let’s execute the Reverse() method from the Array class to invert the sequence of elements. To do that add another method into the same static class as shown below
/// Outputs
/// Before Sorting…
/// B14,A11,B12,A13
/// After Reverse Sorting…
/// A13,B12,A11,B14
/// </summary>
public static void ReverseSortExample() {
Console.WriteLine(“Before Sorting…”);
string[] pallets = { “B14”, “A11”, “B12”, “A13” };
Console.WriteLine(string.Join(“,”, pallets));
Array.Reverse(pallets);
Console.WriteLine(“After Reverse Sorting…”);
Console.WriteLine(string.Join(“,”, pallets));
}
Execute the code from the main method as follows
ArrayHelperMethods.ReverseSortExample();
#endregion
Console Output
B14,A11,B12,A13
After Reverse Sorting…
A13,B12,A11,B14
How to use the Clear Helper method
The Array.Clear() method helps to clear the value of specified elements within the array. To do that add another method into the same static class as shown below
/// Outputs
/// Clearing 2 … count: 4
/// ,,B12,A13
/// </summary>
public static void ClearExample()
{
string[] pallets = { “B14”, “A11”, “B12”, “A13” };
Console.WriteLine(“”);
Array.Clear(pallets, 0, 2);
Console.WriteLine($”Clearing 2 … count: {pallets.Length}“);
Console.WriteLine(string.Join(“,”, pallets));
}
Execute the code from the main method as follows
#region Day 11 – Helper Methods – Array
ArrayHelperMethods.ClearExample();
#endregion
Console Output
,,B12,A13
How to use the Resize helper method
In the following example, let’s expand the array size from 4 to 6, then add two new numbers at index 4 and 5. The two newly added elements will remain null until the value is assigned.
/// Outputs
/// B14,A11,B12,A13
/// Resizing 6 … count: 6
/// B14,A11,B12,A13,C01,C02
/// </summary>
public static void ResizeAndAdd() {
string[] pallets = { “B14”, “A11”, “B12”, “A13” };
Console.WriteLine(string.Join(“,”, pallets));
Array.Resize(ref pallets, 6);
Console.WriteLine($”Resizing 6 … count: {pallets.Length}“);
pallets[4] = “C01”;
pallets[5] = “C02”;
Console.WriteLine(string.Join(“,”, pallets));
}
Execute the code from the main method as follows
ArrayHelperMethods.ResizeAndAdd();
#endregion
Console Output
Resizing 6 … count: 6
B14,A11,B12,A13,C01,C02
Complete Code on GitHub
GitHub — ssukhpinder/30DayChallenge.Net
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