Rotate Array In-Place
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Hello. Could you add the expected result please? As in previous tasks. Thank you.
Yevgeny, Hi!
Well, perhaps it is good idea, thanks. I've just tried to add it in two places:
- in the example input data (it is going to be ignored anyway)
- when "wrong answer for N, K" is returned
Please tell if it helps!
hmm. that helped. but i'm not sure if the task is working correctly.
input:
5 1
1 2 3 4 5
output:
2 3 4 5 1
the result is "wrong"(
your explanation:
Wrong result for N=5 K=1: for [49 52 93 60 40] result should be [52 ...]
if you need i will send you my code
Hi, you don't actually rotate the array, you just print its elements in a different order. That's not quite the same thing.
(upd, it's me, admin again, just was testing your code and forgot to re-login)
Ah, I checked your code and probably I see there is small misunderstanding.
These BASIC problems do not require you to output anything. Specifically in this problem you need to modify array
in your code, or rather in rotate subroutine.
When you submit your code, the checker adds its own lines in front of yours, like this:
- checker sets array
Ato some values (e.g. starting with49 52 93...as in your example) - then your subroutine
rotateis called - now checker tests that
A(0)should be52and so on - at last checker verifies that your code haven't created any new arrays (to verify that all operations were done
inside the
Aarray, that is "in place").
So you see, these BASIC problems are not needed to teach people BASIC (probably no one will need it) but to
have the simplified language where it is easy to check (for checker) that you invented correct algorithm.
So to conclude, checker doesn't look at what your code prints. Instead it checks contents of the array after your code runs.