How to make a QuickSort for 2 vectors?

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Thomas Nell
Thomas Nell le 12 Déc 2018
Commenté : James Tursa le 13 Déc 2018
Hey guys,
I have 2 vectors here, time [23 4 8 9 21 3 11 15 17 2] and signal [12 14 11 13 16 5 31 21 9 3]. What I want do is quicksort time into ascending order (i.e time =2 3 4 8 9 11 15 17 21 23] ). However, I also want the signal to rearrange itself accordingly, so it becomes [3 5 14 11 13 31 21 9 16 12]. How would I go about this???
Kind regards,
Tom
P.S I'm not allowed to use the sort command

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James Tursa
James Tursa le 12 Déc 2018
Modifié(e) : James Tursa le 12 Déc 2018
See the 2nd output of the sort( ) function, and use that as an index to rearrange your signal. E.g.,
[t,x] = sort(time);
s = signal(x);
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Thomas Nell
Thomas Nell le 12 Déc 2018
yes sir, it is
James Tursa
James Tursa le 13 Déc 2018
What have you done so far? Are you having trouble getting started? Are you getting errors in your code? Do you have a working quicksort routine and just need to figure out how to get the indexes? Or ...?

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