"can any one help me to crack the code that I attached" You'll have to explain what that means. There is nothing to "crack" in the code (a FileExchange entry). The code simply generates a hash according to one of the standard hashing algorithm.
"I want to gain input from output". You clearly do not understand what a hashing algorithm does as this is totally impossible. There is an infinite numbers of inputs that result in the same output. MD5 has so many weaknesses that it is now trivial to create several inputs that result in the same output. But just given the output, it's impossible to tell which was the true input.
I recommend you understand first what a hash is.
