Removing trailing nulls from byte array in C#

Question

Ok, I am reading in dat files into a byte array. For some reason, the people who generate these files put about a half meg\'s worth of useless null bytes at the end of the

Answer 1

I agree with Jon. The critical bit is that you must "touch" every byte from the last one until the first non-zero byte. Something like this:

byte[] foo;
// populate foo
int i = foo.Length - 1;
while(foo[i] == 0)
    --i;
// now foo[i] is the last non-zero byte
byte[] bar = new byte[i+1];
Array.Copy(foo, bar, i+1);

I'm pretty sure that's about as efficient as you're going to be able to make it.