Re: project euler 26

[Ben Bacarisse <ben.usenet@bsb.me.uk>]

"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> writes:

> On 2023-09-04 13:06, Niklas Holsti wrote:
>> On 2023-09-04 12:19, CSYH (QAQ) wrote:
>>> I am new to Ada, I know is there a good way to start this program?
>>> thanks
>>> https://projecteuler.net/problem=26
>> First invent/discover the method (algorithm) for solving the problem,
>> without thinking about the programming language.
>> I don't think any language has built-in features that would lead to a
>> direct solution, although some functional language with lazy evaluation
>> could come close, because such languages can manipulate unbounded
>> (potentially infinite) sequences of values. Such sequences can be handled
>> in Ada, too, but with more effort -- they are not "built in" to Ada.
>
> Infinite division does not require big numbers, which Ada 22 has, but I
> wound not use them anyway because the performance would be abysmal.
>
> BTW, Ada is perfect for numeric algorithms no need to resort to functional
> mess... (:-))

Perfect?  That's a bold claim!

Mind you, I don't think this problem is really a numerical one in that
sense.  It needs some simple integer arithmetic but then every language
is perfect for that sort of arithmetic.

Using a functional mess (Haskell) a simple, native solution (i.e. using
no modules) is only 9 lines long.

I don't want to start a language war.  Ada is just more 'wordy' by
deliberate design so a simple Ada solution is inevitably going to be
longer in terms of lines.  Rather my purpose in posting is to steer the
OP away from thinking of this as a numerical problem in the classical
sense.  It really isn't.

-- 
Ben.