Re: project euler 29

["Jeffrey R.Carter" <spam.jrcarter.not@spam.acm.org.not>]

On 2023-09-15 11:03, CSYH (QAQ) wrote:
> 
> for this problem I want to know how to know is there an easy way to store a large number like 100 ** 100, and how do U make a similar function like "set(context)" to delete the duplicated value in a vector.

You will need an unbounded-integer pkg. If you want to write portable code in a 
standard language, then you can write Ada 12 using a library such as 
PragmARC.Unbounded_Numbers.Integers 
(https://github.com/jrcarter/PragmARC/blob/Ada-12/pragmarc-unbounded_numbers-integers.ads). 
This will compile with both GNAT and ObjectAda.

If you want to write non-portable code in a non-standard, Ada-like language, 
then you can use the GNAT language, which is mostly Ada 12 with some Ada 23 
features, one of which is the Ada-23 standard package 
Ada.Numerics.Big_Numbers.Big_Integers 
(http://www.ada-auth.org/standards/22aarm/html/AA-A-5-6.html). This can only be 
compiled with GNAT. Note that, unlike PragmARC.Unbounded_Numbers.Integers, 
GNAT's implementation of Ada.Numerics.Big_Numbers.Big_Integers is not truly 
unbounded. I don't know if it will hold 101 ** 101 without modification.

You can store the results directly in a set from the standard library to avoid 
duplicate values. If I understand your Python (probably not), you would want to 
output the result of Length for the resulting set.

-- 
Jeff Carter
"I didn't squawk about the steak, dear. I
merely said I didn't see that old horse
that used to be tethered outside here."
Never Give a Sucker an Even Break
103