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  1. Commons Collections
  2. COLLECTIONS-479

An Order Statistic Tree

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Details

    • New Feature
    • Status: Open
    • Minor
    • Resolution: Unresolved
    • None
    • 4.x
    • None
    • None

    Description

      An order statistic tree http://en.wikipedia.org/wiki/Order_statistic_tree provides two useful properties. The ability to rank arbitrary keys relative to keys existing in the tree AND the ability to retrieve elements from the tree with the given rank.

      This can be used to find the percentile rank of a key for example.

      This functionality is not yet provided yet by any of the major libraries AFAIK.

      Attachments

        1. RedBlackBST.java
          20 kB
          Ajo Fod
        2. NodeExistsException.java
          0.3 kB
          Ajo Fod
        3. COLLECTIONS-479.patch
          37 kB
          Rodion Efremov

        Issue Links

          is related to

          New Feature - A new feature of the product, which has yet to be developed. COLLECTIONS-181 Provide maps with direct indexed access to the entries [PATCH]

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Reopened

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            People

              Unassigned Unassigned
              ajo.fod Ajo Fod
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              Dates

                Created:
                Updated: