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Free online training offered with 8-session programming tutorials

Users of the Wolfram Language are fired up to improve their knowledge and skills, and we're bringing a series of programming tutorials to Wolfram U to help meet this need, starting on February 18. Sessions meet on Tuesdays and Thursdays, and a weekly quiz will be offered to assess your progress. Wolfram Technology Certified Level I will be awarded to participants who successfully complete additional assigned problems.This is an ambitious project with comprehensive content, and I'd love to hear what people think of it. Registration is open now.
POSTED BY: Jamie Peterson
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POSTED BY: Abrita Chakravarty
Updating Name
Updating Name
Posted 6 years ago

I had some minor issues with Exercises 1.7, and 1.18

1.7 Same issue as pointed out above by Daniel and George.

1.18 The code does the job, finds Geodistance and reports it in Km, not sure why it is interpreted as incorrect.

I have to say that I really enjoyed the Exercises. It has been a while since I had fun with coding! Thanks for the course and the tutorials.
POSTED BY: Updating Name
Dan Chevion
Dan Chevion
Posted 6 years ago

Hi, How can I download the exercises as a notebook?

Thanks, Dan Chevion
POSTED BY: Dan Chevion

Thanks. I already have (twice)
POSTED BY: George Woodrow III

Very much appreciated, George!
POSTED BY: Jamie Peterson

Thanks. I already have (twice)
POSTED BY: George Woodrow III
POSTED BY: Abrita Chakravarty

Hello everyone.

I have some troubles with 1.4. I get the same output as the exercise does, but I do not get the correct answer. I am using as entry value of the pure function a Range[26] list so I can make every 26 columns that I need.

I think the problem may be the entry value. Maybe it has to be Alphabet[], but I do not know how to write it. My code right now is:

Column[{Alphabet["English", "IndexCharacters"][[#]], Alphabet[][[#]]}, Frame -> True, Background -> RandomColor[]] & /@ Range[26] // Row

Thanks
POSTED BY: Daniel Doménech

I also got the right response, but was marked wrong. I suspect that there are a lot more ways to solve this problem than the (automatic) grader knows about. I sent an e-mail to wolfram-U showing what I did (for this and other problems) but have not received a response. If there are only 80 or so people working on the exercises, it shouldn't be too hard for a human to eyeball the responses.

For what it's worth, your code is substantially different from mine, but it also produces the correct output.

My observation is that the problems for which you could construct a Unit Test seem to be graded fine, but the others -- including this one -- are sometimes problematic.
POSTED BY: George Woodrow III

Yeah, that would be great.

I hope the Wolfram workers help us with that question. We have to get the 20 correct answers in order to pass the Exercises, right?

And George, if you don't mind, can you write your code? I get curious when you said your code was very different.

POSTED BY: Daniel Doménech
POSTED BY: George Woodrow III
POSTED BY: Daniel Doménech

Your code produced a correct output, so it was not "wrong". It may not be as elegant as it could be.
POSTED BY: George Woodrow III

Hi George, your code almost matches the wanted answer but you didn't use the exact functions specified in the question. That is why your output is very close to the correct one but doesn't match it. Let me give you a hint: (In the question it is written Framed not Frame)

Pretty Close huh :)

Good Luck
POSTED BY: Ahmed Elbanna

Framed is not 'legal' in this context in 12.1, which I am using. It shows red and gives an error.
POSTED BY: George Woodrow III

Hi George

Framed is a function, not an option, please look it up, and I am sure you will make it work. I tested it myself on 12.1 and it works.
POSTED BY: Ahmed Elbanna

ok -- it used to also be an option (Using WL since version 1.1). However, what I wrote gets the same job done. I should point out that several of the 'suggestions' in the questions specify illegal operations, so I can't rely on them for hints on how to write the code.

The real point is that there are multiple ways to achieve a goal when coding. This was true in c and assembler, and it is true in spades for WL. The questions that appear to use some form of Unit Test presented no problem for me, even though I am sure that in many cases, my code is different from what the designers expected. This is because it relies on matching expected output to actual output.
POSTED BY: George Woodrow III

The passing grade for the exercise is 70%, so you should get at least 14 of the 20 correct.
POSTED BY: Abrita Chakravarty

@Robert McHugh: Each exercise question is graded individually when you hit th e"Check my solution" button/link. So you can space out your submissions over several sessions.

@Lluís Pastor: Try setting the attributes of myListable function first and then define it.

POSTED BY: Abrita Chakravarty

Hi!

I'm about to end my exercises but I cannot make it with the 4th one. I've tried to use SetAttributes and Listable, but it doesn't work out. May I ask for some help? Thanks,

Lluís
POSTED BY: Lluís Pastor
Robert McHugh
Robert McHugh
Posted 6 years ago

Regarding the exercises, should all answers be submitted at once, or can submitting answers be spaced out over several days and several sessions?

POSTED BY: Robert McHugh

Thanks a lot!
POSTED BY: Waqar ahmed

Hi, I just discovered this but wish I had earlier. I know I won't be able to take part in quizzes and exercises but can I get recorded sessions. It will be a great help.
POSTED BY: Waqar ahmed

Yes! The eight recorded sessions and the lecture notebooks are available here: https://www.wolfram.com/broadcast/c?c=471

Click on an individual video to access the download link from the control bar.
POSTED BY: Jamie Peterson
POSTED BY: Jamie Peterson

Sending them to you over email.
POSTED BY: Abrita Chakravarty
POSTED BY: Lluís Pastor

Do you have the links for the last quiz and he exercises?

Thanks.

george

POSTED BY: George Woodrow III
Robert McHugh
Robert McHugh
Posted 6 years ago

Looking through the exercises, am not sure about the intent of item #1.12: Write a function greatestCommonDivisor ...

The question seems to suggest this is a one-line exercise. Of course, using the GCD function in Mathematica would be trivial -- so the intent must be something else. But writing a function to find the GCD is probably not a one line exercise, as described here: wikipedia page for GCD.

Can you expand on the intent of this question? Thanks!
POSTED BY: Robert McHugh
suslov
suslov
Posted 6 years ago

I also would appreciate if organizers clarify item 1.12.

POSTED BY: suslov

There absolutely is a one-line solution using recursion and Euclid's algorithm.
POSTED BY: Victor Kryukov
suslov
suslov
Posted 6 years ago

Dear Viktor, Thank you for your comment. You are absolutely right, but this is a training for beginners. As I know (found) the correct answer, I am positive now that implementation of Euclid's algorithm is not expected in item 1.12. I realized that organizers provided a clue, but still believe that a more clear wording would be useful for the tutorial participants. Best regards. Alexey.

POSTED BY: suslov
Douglas Kubler
Douglas Kubler
Posted 6 years ago

Yes, Cascade Widows made them accessible.
Oops, I have to save 3 and 4 to keep accessibility permanent.. 3 and 4 are in a nice slideshow arrangement with a << <-> >> navigation bar at the top. 1 and 2 are regular notebooks with navigation by scrolling up and down

Thank you,

Doug
POSTED BY: Douglas Kubler

Hi Douglas, Does the Window -> "Bring All to Front" (or Window -> Arrange Windows -> Tile Vertically) menu option, in Mathematica/Wolfram Desktop, work to bring the notebook windows within view? Notebooks #3 and #4 were saved with similar settings as #1 and #2. Thanks.
POSTED BY: Abrita Chakravarty
Douglas Kubler
Douglas Kubler
Posted 6 years ago

I have downloaded the notebooks for the first 4 lessons. I can open the first two without any problems. When I open #3 or #4 the window doesn't show although the Windows task bar shows an open window. When I kill the window a flashing image of a window rushes in from the right off-screen as it shrinks rapidly to nothing. Have the notebook windows been saved with settings used in the live seminars? ............. puzzled .............
POSTED BY: Douglas Kubler

Review questions from Session 3:

Flow control with multiple branches can be achieved using:

  • Nested If statements
  • Which
  • Switch
  • All of the above ✓

Which of the following is an example of a pure function that accepts two arguments?

  • #^2+#^3 &
  • #1^2+#2^2 & ✓
  • #x^2+#y^2 &
  • None of the above

Having defined exp1=Sin[x]+Cos[x], which of the following will compute the value of exp1 for x = 10.0?

  • Module[{x=10.0},exp1]
  • Block[{x=10.0},exp1] ✓
  • With[{x=10.0},exp1]
  • All of the above
POSTED BY: Abrita Chakravarty
POSTED BY: Abrita Chakravarty

Thanks to the tutorial participants who reported a problem with scoring for Quiz 1. We have identified an error with the scoring, and it is now fixed. We apologize for the problem. If you attempted the quiz earlier, please reload the quiz notebook (to be sure that you have the latest version) and try it again.
POSTED BY: Jamie Peterson
POSTED BY: Abrita Chakravarty
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