How to arrange array in new order and change position of elements in corresponding array?

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Hi, in my program I have an array d, which is 100x1 and I have another 100x1 array e, that corresponds to d. I would like help to sort d in ascending order (d=sort(d);) and also change the positions of the elements in e such that the result still corresponds to the element positions in d. For instance if the smallest value in d is the fourth element it becomes the first element in d and the forth element in e changes position with the first element. Thanks.

Accepted Answer

Guillaume
Guillaume on 17 Apr 2015
Use the second return value of sort to reorder your e array.
[d, order] = sort(d);
e = e(order);

More Answers (1)

Star Strider
Star Strider on 17 Apr 2015
You can simply sort ‘e’ as well:
d = sort(d);
e = sort(e);
This assumes of course that all of the elements of ‘d’ are greater than zero.
  2 Comments
ajk1
ajk1 on 17 Apr 2015
Edited: ajk1 on 17 Apr 2015
thanks, if I have another array f that also corresponds to d but the magnitude of the values do not increase in the same way as the elements in d is there a way of changing the order to also correspond to d?
Star Strider
Star Strider on 17 Apr 2015
The easiest way is to do whatever operation created ‘f’ on the elements of sorted vector ‘d’.

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