How would I print the largest and smallest number and the difference between those numbers? (Imagine writing it in tinkercad or code.org) [closed]

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Determine the largest and the smallest number in a list and print the difference between them.

Example: with a list of [13,2,9,19,54,4,7,12] (use a list of these numbers for testing) the minimum is 2, and the maximum is 54 so it should print 52.

What I have tried:

I'm just so confused about this. I'm not sure how to start or how to code it really.

Posted 25-May-21 6:00am

j a c o b t h e J O K E R

Updated 25-May-21 6:43am

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Dave Kreskowiak · Answer 1 · 2021-05-25T06:10:00

Solution 1

Work it out on paper, step by step.

What are you going to have to track? Well, that's easy. you're going to have to look at each number in the list, one at a time. Now, is it higher than the highest number? What do you do if it is? Is it lower than the lowest number you've seen? What do you do if it is? Keep going through the list. Now that you have the highest and lowest number, how do you determine the difference between them?

This is an easy assignment if you put some thought into it.

Posted 25-May-21 6:10am

Dave Kreskowiak

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j a c o b t h e J O K E R 25-May-21 12:12pm

I know it's easy. That why I'm mad right now cause I cant figure it out lol. But, all I'm trying to do is print the smallest and highest number (2, 54). And then print the difference between them (52).

Dave Kreskowiak 25-May-21 12:19pm

I already told you how to do it. My description maps to 1 to 3 instructions and even implies you have to keep track of certain values, all two of them.

Now, what would you have me say, without writing your code for you?

Richard MacCutchan · Answer 2 · 2021-05-25T06:43:00

Get a big piece of paper, and ten small ones. Draw two boxes on the big piece, one labelled "minimum", and one labelled "maximum". Now write all the numbers 13,2,9,19,54,4,7,12 on one each of the small pieces. You should have two left, write -infinity on one and put it in the maximum box. Write +infinity on the other and put it in the minimum box. Now pick each of the other numbered pieces one at a time. Compare the number on it with the minimum box. If it is smaller then replace the piece in the minimum box with the numbered piece. Do the same with the maximum box, but check if it is larger. Repeat with all the numbered pieces. once you have used up all the pieces see what you have in the two boxes.

And that is all there is to it, so now you can write those steps in code.