ReverseEachWord

using System;
using System.Text;

namespace Algorithms
{
    class Program
    {
        // Create a function that reverses each word in a sentence
        // Input: string
        // Output: new string with each word reversed
        // Assumptions: no punctuation in the string, each
        // word separated by spaces
        // Casing should remain the same.
        static String ReverseEachWord(String input)
        {
            if (string.IsNullOrEmpty(input))
            {
                return input;
            }

            char[] arr = input.ToCharArray();

            Array.Reverse(arr);

            return new String(arr);
        }

        static void Main(string [] args)
        {
            System.Console.WriteLine(ReverseEachWord("Hello World"));
            // // returns "dlroW olleH"
            System.Console.WriteLine(ReverseEachWord(null));
            // // returns a blank
            System.Console.WriteLine(ReverseEachWord("racer racecar madam"));
            // // returns "racer racecar madam"
            System.Console.WriteLine(ReverseEachWord("what can I do today"));
            // // returns "yadot od I nac tahw"
            System.Console.WriteLine(ReverseEachWord(" "));
            // // returns a blank
        }
    }
}