DCing algorithm

[Som1Lse]

Okay, guys, it seems that you just can't give up on LF . And I also noticed that you need some helping hand with C#, so I wrote a much faster program:
Here is comparison to Someone else's code(on davis.dat):

Code:

My program: 9 ms
Someone else's program: 6297 ms

That is a pretty good speedup, and yes I am not particularly good with C# as I greatly prefer C++. I just copied YinYin's code and fixed a few bugs in his code.

As you can see, perfomance skyrockets by almost x700 times(mainly because you open file every time you read a single byte, while I do it only once).

Are you sure that the code opens the file every byte?
I do not know much about C#, but I would imagine that it opens the file once, and then reads every byte separately, which is obviously still causes a major slowdown, but not nearly the same as opening the file each time a byte is read.

Good job on improving the code.

@below: Interesting.