in reply to Multiple file reading
in thread Multiple file reading

I think this is what you want:
@a = split //, 'xx110'; @b = split //, '001xx'; splice @a, ++$i, 0, $_ or $i++ for(@b); print @a, "\n";
Results: x0x0111x0x
You just have to read in each line of your files, then split the characters into an array. The splice line is sort of tricky. It inserts each element of @b into @a, at the 1st, 3rd, 5th ... position of @a. I hope this helps. There may be another and better way to merge arrays, but I cant think of one right now.