public static string RevString3(string str)
{
string[] strArray = str.Split(' ');
string revString = "";
foreach (string s in strArray)
{
var charArray = s.ToCharArray();
Array.Reverse(charArray);
string reString = (strArray.Length > 1) ? new string(charArray) +" " : new string(charArray) + string.Empty;
revString += reString;
}
return revString;
}
public static string RevString4(string str)