Easy way to reverse each word in a sentence

Question

Example:

string str = \"I am going to reverse myself.\";
string strrev = \"I ma gniog ot esrever .flesym\"; //An easy way to achieve this

A

Answer 1

I used XOR for swapping from here http://en.wikipedia.org/wiki/XOR_swap_algorithm

X := X XOR Y
Y := X XOR Y
X := X XOR Y

the C# is:

public  string ReverseWords(string str)
    {
        StringBuilder strrev = new StringBuilder();
        StringBuilder reversedword = new StringBuilder();

        foreach (var word in str.Split(' '))
        {
            char[] singlesentence = word.ToCharArray();
            int j = singlesentence.Length / 2;
            if (j > 0)
            {
                for (int i = singlesentence.Length - 1, c = 0; i == j; c = c + 1, i = i - 1)
                {


                    singlesentence[c] = (char)(singlesentence[c] ^ singlesentence[i]);
                    singlesentence[i] = (char)(singlesentence[c] ^ singlesentence[i]);
                    singlesentence[c] = (char)(singlesentence[c] ^ singlesentence[i]);

                }
            }

            strrev.Append(singlesentence);
            strrev.Append(" ");
        }
        return strrev.ToString();
    }