These appear to be homework exercises.  They are not particularly difficult.

You shouldn't expect us to do your homework for you.  What have you tried, and what was the result?

Hint for #2: you will probably find isprime useful.

Just a minute, where did I put  my flame-retardant keyboard. I haven't had to use it lately, but it's here somewhere.

Found it.

Now, let's look at the Student Help Center Code of Conduct:

Student Help Center code of conduct (Please read!)

Welcome to the Maple Student Help Center. This is a great place to get help on effectively using Maple for your courses. This forum will be supported by Maplesoft staff as well as experienced users around the world. Please take the time to read the following code of conduct:

• No illegal, obscene, defamatory, hateful, and other forms of offensive content.
• Be respectful to other members. No name-calling or "flaming". We want everyone to find this forum useful. If you think someone has posted a "stupid" question, then ignore the post. You don't have to express your personal opinion on the person or question in public.
• Respect copyright. Do not post other peoples' images or work without permission or the proper level of acknowledgment.
• Do your own homework. Don't expect other people to do your math homework for you. But, if you're genuinely stuck on a Maple question or a math question, you'll likely be able to get help.
• Post in the appropriate forum. The student forums are intended for math-related questions covering topics from late high school to second year college/university. For more advanced topics, please use the regular MaplePrimes forums.
  

We reserve the right to remove any posts that do not, in our opinion, fall within the guidelines of conduct for this Web community.

It appears to me that you have not followed three of the first 4 items in this list: obscene, disrespectful, and asking ohers to do your homework. There is no excuse for this. The way you have responded does not make me interested in trying to help you do your homework. There is a big difference IMHO between asking someone to do your homework for you and getting help with your homework.

One reason most of us want to see something that you have done towards your problems is that we want to see the level on which you trying to use Maple. You never told us what type of class this is for, or anything about your background. What version of Maple are you using? These are very important pieces of information I seek to have answered before I answer any question in this forum or in face-to-face interaction with students.

The post that offended you so much did contain some very useful suggestions, which you appear to have chosen to ignore. I'll focus on the second question. Maple has a command, isprime, that returns true if the argument is prime and false otherwise. For example, the following procedure returns all primes between its two arguments:

IP := (m,n) -> select( isprime, [$m..n] );
IP(10,20);
                              [11, 13, 17, 19]

This implementation does not use any explicit looping. It will be much more efficient than your attempt, but this might not be anywhere close to what you would be expected to understand or come up with on your own.

Doug

---------------------------------------------------------------------
Douglas B. Meade  <><
Math, USC, Columbia, SC 29208  E-mail: mailto:meade@math.sc.edu       
Phone:  (803) 777-6183         URL:    http://www.math.sc.ed

for #1

The list "L" must be define before running showCol.

> showCol := proc (L::list)
local x;
for x in L do
print(L[x]);
end do;
end proc;

> showCol(L);
 

for #2

> primeCol := proc (m::integer, n::integer)
local L, i;
L := select(isprime, [seq(m .. n)]);
for i to nops(L) do
print(L[i]);
end do;
end proc;

> primeCol(1, 100);
 

Have you find a shorter way to do it?

mario.lemelin@cgocable.ca

... way so you can use the output

> primeCol := proc (m::integer, n::integer)

local L, V; 

L := select(isprime, [seq(m .. n)]); 

V := convert(L, Vector); 

RETURN(V)

end proc;

> Vec := primeCol(1, 20);

mario.lemelin@cgocable.ca