Help optimize D solution to phone encoding problem: extremely slow performace.

[Renato]

On Wednesday, 17 January 2024 at 11:56:19 UTC, evilrat wrote:
> On Wednesday, 17 January 2024 at 11:20:14 UTC, Renato wrote:
>>
>> That means the input file is still not ASCII (or UTF-8) as it 
>> should. Java is reading files with the ASCII encoding so it 
>> should've worked fine.
>
> It seems that it is only works with ASCII encoding though.

Yes, that's according to the rules - only ASCII for everything.