LZ77 dangggg dude!!! That's one hellouva code. hehe... Okay, to be honest, I can understand the code you are using, but I just couldn't understand what you are trying to do? eh... what is LZ77 in the first place??? eheh... Okay, don't worry about explaing LZ77, baru code ali ramrari chapna mildaina? so that I could cut and paste and run in on my machine? eh... dimag ma ali bhayepani chirthyo... hehe... how does the input file looks like, how the output file should look line... alikati hint dim na, tyo code read garera kehi bujhe ta mari jaam, ali ali commenting pani garum na hau.... btw, be careful when u cut and paste the code < -- > is a HTML tag, and it won't show up in Sajha... I guess you should use pre tag... <pre> (quick test)