From: "Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org>
Subject: Re: Tally
Date: Tue, 14 Jan 2020 22:08:07 +0100
Date: 2020-01-14T22:08:07+01:00 [thread overview]
Message-ID: <qvlajt$95j$1@dont-email.me> (raw)
In-Reply-To: <3c6f1486-293d-4eb5-a379-279b108248d8@googlegroups.com>
On 1/14/20 4:27 PM, Gilbert Gosseyn wrote:
> Before I make long tests with access Types, declarations or containers, I would like to get an advice on how to program in a simple and fast way the following, or get a hint to an existing program.
>
> Example_Input: (2, 3, 8, 2, 2, 2, 7, 2, 3, 4, 8) ; -- variable Length
>
> Output by function or procedure : ((2, 5), (3, 2), (8, 2), (7, 1), (4, 1)); -- unknown Length
A lot depends on what restraints the problem domain puts on the input values. If
you can define something like
type Input_Number is range 1 .. 10;
then you can do something straightforward like
type Count_Map is array (Input_Number) of Natural;
Count : Count_Map := (others => 0);
Number : Input_Number;
...
loop
exit when No_More_Numbers;
Number := Next_Number;
Count (Number) := Count (Number) + 1;
end loop;
If you can't limit the input numbers to a sufficiently small range that an
object like Count can be declared, then you'll need to use a map, as Holsti
suggested, which is only a little more complicated.
--
Jeff Carter
Just as Khan was hindered by two-dimensional thinking in a
three-dimensional situation, so many developers are hindered
by sequential thinking in concurrent situations.
118
next prev parent reply other threads:[~2020-01-14 21:08 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-14 15:27 Tally Gilbert Gosseyn
2020-01-14 16:22 ` Tally Niklas Holsti
2020-01-14 17:28 ` Tally Simon Wright
2020-01-15 11:52 ` Tally Simon Wright
2020-01-14 21:08 ` Jeffrey R. Carter [this message]
2020-01-15 3:40 ` Tally Brad Moore
2020-01-15 9:03 ` Tally Simon Wright
2020-01-15 23:09 ` Tally Jere
2020-01-16 11:34 ` Tally Simon Wright
2020-01-16 15:35 ` Tally Brad Moore
2020-01-16 20:20 ` Tally Randy Brukardt
2020-01-16 22:03 ` Tally Jeffrey R. Carter
2020-01-16 22:00 ` Tally Jeffrey R. Carter
2020-01-16 22:25 ` Tally Simon Wright
2020-01-17 2:51 ` Tally Brad Moore
2020-01-17 3:08 ` Tally Brad Moore
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