Trying to reduce memory usage

[tsbockman]

On Wednesday, 17 February 2021 at 04:10:24 UTC, tsbockman wrote:
> On files small enough to fit in RAM, it is similar in speed to 
> the other solutions posted, but less memory hungry. Memory 
> consumption in this case is around (sourceFile.length + 32 * 
> lineCount * 3 / 2) bytes. Run time is similar to other posted 
> solutions: about 3 seconds per GiB on my desktop.

Oops, I think the memory consumption should be (sourceFile.length 
+ 32 * (lineCount + largestBucket.lineCount / 2)) bytes. (In the 
limit where everything ends up in one bucket, it's the same, but 
that shouldn't normally happen unless the entire file has only 
one unique line in it.)