Generating integers between in a range, excluding zero
There are a couple of ways to achieve this depending of what you are trying to do.
Using Maple T.A. only functions you can use three random numbers and a switch statement to achieve this.
# random integer from -5 to 5 excluding 0 $a=switch(rint(2),rint(5)-5,rint(5)+1);
An alternative using a Maple call and only one random number and an if statement is
# Create a procedure called gen(). If you want a number random number you just call gen() again. # Below we can see the variables a and b are both random numbers. $alg=maple(" randomize(): gen := proc () local roll, r; roll := -5+rand(10); r := roll(); if 0 <= r then r := r+1 end if; r end proc: a:=gen(): b:=gen(): ")
There is a cost to the maple call and a cost to rolling three random numbers. Experiment with your algorithm to find out which is best.