Task - Implementing a Generic Method
You can clone the base code from the GithHub Repository.
We have a program which contains a method called ReverseArray. The method reversed an integer array.
In the main method, we are attempting to reverse a string array as well, however, it results in an error because the ReverseArray method does not support a string array.
Your task is to convert the ReverseArray method into a generic method so that the program is able to reverse and display both example and strExample arrays without any errors.
Nothing needs to be modified in the main method.
Check: If the program compiles and runs successfully, reversing and outputting both the int and string type arrays using the same reverseArray method, then your solution is correct.
methodName<T>(args, …);;Hint 2: Convert the return type of the
ReverseArray method into an array of type T (T being the generic type parameter);Hint 3: Convert the argument and the variable type to an array of
T;
namespace ConsoleApp
{
internal class Program
{
public static T[] ReverseArray<T>(T[] array)
{
T[] reversedArray = new T[array.Length];
int lastIndex = array.Length - 1;
for (int i = 0; i < array.Length; i++)
reversedArray[i] = array[lastIndex - i];
return reversedArray;
}
static void Main(string[] args)
{
int[] example = new int[] { 1, 2, 3, 4, 5 };
Console.WriteLine("Original Array:");
foreach(var i in example)
Console.Write(i + " ");
Console.WriteLine("");
example = ReverseArray(example);
Console.WriteLine("Reversed Array:");
foreach (var i in example)
Console.Write(i + " ");
Console.WriteLine("");
string[] strExample = new string[] { "a", "b", "c", "d", "e" };
Console.WriteLine("Original Array:");
foreach (var i in strExample)
Console.Write(i + " ");
Console.WriteLine("");
strExample = ReverseArray(strExample);
Console.WriteLine("Reversed Array:");
foreach (var i in strExample)
Console.Write(i + " ");
}
}
}
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Зміст курсу
Advanced C# with .NET
1. Introduction to Desktop Development with .NET
Advanced C# with .NET
Task - Implementing a Generic Method
You can clone the base code from the GithHub Repository.
We have a program which contains a method called ReverseArray. The method reversed an integer array.
In the main method, we are attempting to reverse a string array as well, however, it results in an error because the ReverseArray method does not support a string array.
Your task is to convert the ReverseArray method into a generic method so that the program is able to reverse and display both example and strExample arrays without any errors.
Nothing needs to be modified in the main method.
Check: If the program compiles and runs successfully, reversing and outputting both the int and string type arrays using the same reverseArray method, then your solution is correct.
methodName<T>(args, …);;Hint 2: Convert the return type of the
ReverseArray method into an array of type T (T being the generic type parameter);Hint 3: Convert the argument and the variable type to an array of
T;
namespace ConsoleApp
{
internal class Program
{
public static T[] ReverseArray<T>(T[] array)
{
T[] reversedArray = new T[array.Length];
int lastIndex = array.Length - 1;
for (int i = 0; i < array.Length; i++)
reversedArray[i] = array[lastIndex - i];
return reversedArray;
}
static void Main(string[] args)
{
int[] example = new int[] { 1, 2, 3, 4, 5 };
Console.WriteLine("Original Array:");
foreach(var i in example)
Console.Write(i + " ");
Console.WriteLine("");
example = ReverseArray(example);
Console.WriteLine("Reversed Array:");
foreach (var i in example)
Console.Write(i + " ");
Console.WriteLine("");
string[] strExample = new string[] { "a", "b", "c", "d", "e" };
Console.WriteLine("Original Array:");
foreach (var i in strExample)
Console.Write(i + " ");
Console.WriteLine("");
strExample = ReverseArray(strExample);
Console.WriteLine("Reversed Array:");
foreach (var i in strExample)
Console.Write(i + " ");
}
}
}
Все було зрозуміло?
