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Write a recursive function countdown(n) that shows n, n-1, …, 1 and then Go!
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Write a recursive function countdown(n) that shows and then Go!
Need a reminder? The key ideaShow
Base case: n is 0. Recursive case: show n, then call with n minus 1.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, compare your working with the solution.
Base case. When n == 0, show Go! and stop.
Recursive case. Show n, then call countdown(n - 1).
For countdown(5), the program shows and then Go!
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