//Write a program that reverses the words in given sentence.
//  Example: "C# is not C++, not PHP and not Delphi!" -> "Delphi not and PHP, not C++ not is C#!".

using System;

class ReverseWordsInSentence
{
    static void Main()
    {
        string sSentence = "C# is not C++, not PHP and not Delphi!";
        string[] asWordsAndSymbols = sSentence.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
        string[] asCleanWords = sSentence.Split(new char[] { ' ', ',', '.', '!', '?' }, StringSplitOptions.RemoveEmptyEntries);
        Array.Reverse(asCleanWords);
        string sTemp1 = null, sTemp2 = null;
        for (int i = 0; i < asWordsAndSymbols.Length; i++)
        {
            if (string.Equals(asWordsAndSymbols[i], asCleanWords[asWordsAndSymbols.Length - i - 1]))
            {
                Console.Write(asCleanWords[i] + " ");
            }
            else
            {
                sTemp1 = asCleanWords[asWordsAndSymbols.Length - i - 1];
                sTemp2 = asWordsAndSymbols[i];
                Console.Write(asCleanWords[i] + sTemp2.Replace(sTemp1, "") + " ");
            }
        }
        Console.WriteLine();
    }
}