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Editorial Team
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Asked: 2026-05-23T01:58:36+00:00

I am using the Facebook SDK for Android to pull a list of a

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I am using the Facebook SDK for Android to pull a list of a given user’s friends. The problem is that the friends are sorted by userid (useless to the end-user). I need them sorted alphabetically.

Currently, I have the list in a JSONArray, and I’m wondering what sort of data structure I should put the names into in order to achieve optimal sorting. So we need to consider insertion time, sort time, and fetch time.

From reading other similar situations online, I am currently leaning towards a TreeSet, but that is just a hunch. What do you all think?

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1 Answer

  1. Editorial Team

    I would use TreeSet, but not for performance reasons. TreeSet implements SortedSet so you have you user list always sorted with right comparator given.
    And Set also makes it easy to update: Just put all new Users into the set regardless they are already in or not. Sets do not contain duplicates.

    I would not think a second about performance here since nobody will have such huge friendslists that it makes a difference.

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