Victor Eijkhout wrote:
I have two arrays, made with numpy. The first one has values that I want
to use as sorting keys; the second one needs to be sorted by those keys.
Obviously I could turn them into a dictionary of pairs and sort by the
first member, but I think that's not very efficient, at least in space,
and this needs to be done as efficiently as possible.
I could use a hand.
You could sort a list of the indices, using the first array to provide
the keys.
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