Re: Sorting a map by value
From: tom_usenet (tom_usenet_at_hotmail.com)
Date: 08/24/04
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Date: Tue, 24 Aug 2004 12:58:14 +0100
On Tue, 24 Aug 2004 07:55:19 GMT, "Kevin W." <contact@in.sig> wrote:
>How do I sort a map by the value, rather than the key? (either
>automatically or with the sort function.)
You can't - std::map has an invariant that it is sorted by key. You'll
have to copy into a vector or similar first, or perhaps maintain two
parallel maps (key->value and value->key).
Tom
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