[Edit]

C# / .NET - reverse array

1 contributors

2 contributions

0 discussions

0 points

Created by:

Roseanne-Read

1365

In this article, we would like to show you how to reverse array in C#.

Quick solution:

xxxxxxxxxx
 
int[] myArray = new int[] { 1, 2, 3 };
​
Array.Reverse(myArray);

or:

xxxxxxxxxx
 
int[] myArray = new int[] { 1, 2, 3 };
​
for (int i = 0; i < myArray.Length / 2; i++)
{
    int tmp = myArray[i];
    myArray[i] = myArray[myArray.Length - i - 1];
    myArray[myArray.Length - i - 1] = tmp;
}

Practical example

Edit

In this example, we use Array.Reverse() method to reverse array.

xxxxxxxxxx
 
using System;
​
public class Program
{
    public static void Main()
    {
        int[] myArray = new int[] { 1, 2, 3 };
​
        // reverse array
        Array.Reverse(myArray);
​
        // display result
        foreach (int item in myArray)
            Console.WriteLine(item);
    }
}

Output:

xxxxxxxxxx
 
3
2
1

Without `Array.Reverse()`

Edit

In this example, we use simple for loop to reverse array.

xxxxxxxxxx
 
using System;
​
public class Program
{
    public static void Main()
    {
        int[] myArray = new int[] { 1, 2, 3 };
​
        // reverse myArray
        for (int i = 0; i < myArray.Length / 2; i++)
        {
            int tmp = myArray[i];
            myArray[i] = myArray[myArray.Length - i - 1];
            myArray[myArray.Length - i - 1] = tmp;
        }
​
        // display result
        foreach (int item in myArray)
            Console.WriteLine(item);
    }
}