how can I sort an array of elements corresponding to another array of elements in decreasing order?

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A123456
A123456 2016-2-16
编辑： Kirby Fears 2016-2-16
A = [0.4049 0.1354 0.0914 0.0578 0.0634 0.0494 0.0494 0.0494 0.0494 0.0494]
B = [1 2 3 4 5 6 7 8 9 10]
So 0.4049 corresponds to 1, 0.1354 corresponds to 2, 0.0914 corresponds to 3 etc. I want A to be sorted in decreasing order and B to be in the order that A has come out in. Sorry I don't know if that is clear.
Thanks in advance.

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回答（2 个）

Kirby Fears
Kirby Fears 2016-2-16
编辑：Kirby Fears 2016-2-16
Try this out:
% sort A in descending order (decreasing A values)
% and keep the sort index in "sortIdx"
[A,sortIdx] = sort(A,'descend');
% sort B using the sorting index
B = B(sortIdx);
Try consulting the documentation for sort if you have other questions along these lines.
Hope this helps.
dpb
dpb 2016-2-16
[A,idx]=sort(A,'descend');
B=B(idx);
doc sort % for details

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