Reverse words

Words in a C# string can be reversed. We combine several methods and concepts from .NET, resulting in a straightforward method.

Consider the Split and Join methods. We can use one to separate words, and the other to merge them back together.

Example code

To begin, we see the sentences we want to reverse. We use the const modifier here, which means the strings can't be changed.

using System;

static class WordTools
{
    /// <summary>
    /// Receive string of words and return them in the reversed order.
    /// </summary>
    public static string ReverseWords(string sentence)
    {
        string[] words = sentence.Split(' ');
        Array.Reverse(words);
        return string.Join(" ", words);
    }
}

class Program
{
    static void Main()
    {
        const string s1 = "blue red green";
        const string s2 = "c# rust python";

        string rev1 = WordTools.ReverseWords(s1);
        Console.WriteLine(rev1);

        string rev2 = WordTools.ReverseWords(s2);
        Console.WriteLine(rev2);
    }
}
green red blue
python rust c#

Solution notes

Many teams prefer simple and straightforward solutions to this sort of problem. Simple methods are easy to maintain, but may have poor performance.

We reversed words in a string using a method that is clear and uses few lines of code. It is easy to enhance when your requirements change.