Easy Turing problem that I'm stuck on =[

[rubdoo]

Hey, I'm really a noob at Turing. We just started and I'm stuck on this problem.

Basically, I just have to have the user input a bunch of numbers, then output the range (lowest number to highest number inputted).
I hope that made sense...

Anyways, this is what I have so far:

code:

var num, high, low : int high := 0 low := 0 put "Type '-1' to finish" put "------------------------------------------------------" put "Enter positive numbers:" put "" loop     get num     exit when num = -1     if num > high then         high := num     elsif num < high then         low := num     end if end loop put "" put "------------------------------------------------------" put "Those numbers range from: ", low, " - ", high

If anyone can help, it would be highly appreciated.
Thanks.

[andrew.]

It outputs the range, but do mean to output all the numbers? Like if I enter 3, 7, and 6, it should say 3, 5, 7? If you want to do that, you have to sort the numbers. Check out this Wikipedia article. It may help you. Basically what you're doing is you're looking at each number at a time and then deciding whether it's lower than the previous. If it is then it goes before the previous, if not then it stays where it is.

[rubdoo]

No. If you enter that, it should output: 3-6

[Tony]

can you at least say what the problem is? like "it doesn't output the proper low bound".

Then I would ask you to explain how you would figure out if a number is the lowest in a set.

[rubdoo]

Oh, yeah. I guess I forgot that
And yeah, that is the problem.

And i know how to do that in real life, but like... not in Turing. hah....

[Tony]

well how would you do that on paper?

[andrew.]

I still don't understand the problem. Is it supposed to just output the first and last number that you enter?

[rubdoo]

I'd look at the numbers, and compare the 2nd one with the 1st and find the smaller one, then compare the 3rd one with the smaller one of the 1st and 2nd ones, and go on down the list to the end. Then I'd have the smallest one...

[rubdoo]

andrew, it's supposed to find the smallest number in the list, and then the biggest, and output them.

[Tony]

you've got the steps down correctly, now you just need to say the same thing in code. You're already looping over the numbers, and you know how to compare them.

All you need to do is compare the same pair of numbers as you've described above.

[saltpro15]

+1 karma to Tony for knowing the answer to everything, as usual keep up the good work on the blog too

[rubdoo]

I think I got it. lol.

This works:

code:

var num, high, low : int high := 0 low := maxint put "Type '-1' to finish" put "------------------------------------------------------" put "Enter positive numbers:" put "" loop     get num     exit when num = -1     if num > high then         high := num     end if     if num < low then         low := num     end if end loop put "" put "------------------------------------------------------" put "Those numbers range from: ", low, " - ", high

[Tony]

looks good. The only exception is if I was to enter in an empty list (that is, first entry is -1).

[rubdoo]

Yeah... but anyways, thanks