How to iterate over TreeMap from end to beginning

Question

I need to iterate through a TreeMap<Integer, T> map from the end to beginning. How to do so?

I have tried the same thing as the answer in posted topic below:

new Comparator<Integer>() {
    @Override
    public int compare(Integer o1, Integer o2) {
        return o2.intValue() - o1.intValue();
    }
}

but this is not a solution, that's just reversing the order.

a duplicate of which question? This seems to be quite different than the "How to Print a treemap in reverse order". That questions (and certainly the answers) seems to focus on how to build a treemap using a custom (eg. reverse) ordering. This is how to take a TreeMap, in whatever order it is in, and iterate it in reverse. — Brett Okken, Jun 02 '14 at 11:11

score 5 · Accepted Answer · answered Jun 01 '14 at 16:33

5

Call descendingMap and iterate over the entry set from that map.

answered Jun 01 '14 at 16:33

Brett Okken

1 Answers1