Text comparison algorithm

Question

We have a requirement in the project that we have to compare two texts (update1, update2) and come up with an algorithm to define how many words and how many sentences have

Answer 1

The difficulty comes when comparing large files efficiently and with good performance. I therefore implemented a variation of Myers O(ND) diff algorithm - which performs quite well and accurate (and supports filtering based on regular expression):

Algorithm can be tested out here: becke.ch compare tool web application

And a little bit more information on the home page: becke.ch compare tool