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Thread: Overlapping multiple periods

  1. #1
    Junior Member
    Join Date
    May 2011
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    Default Overlapping multiple periods


    I have a problem writing a code that will give me needed results.
    Here is my problem. I would appriciate any help.

    I have these three periods:
    - 1.1.2010 - 31.10.2010
    - 1.2.2010 - 31.5.2010
    - 1.3.2010 - 31.12.2010

    Graphicaly it looks like this:

    In result i would like to have sections defined by dates and a number of overlapping periods like this:
    1.1.2010 - 31.1.2010 (1)
    1.2.2010 - 28.2.2010 (2)
    1.3.2010 - 31.5.2010 (3)
    1.6.2010 - 31.10.2010 (2)
    1.11.2010 - 31.12.2010 (1)

    Number in brackets means number of overlapping periods.
    I'm getting a headache solving this problem.
    Please help!

  2. #2
    Administrator copeg's Avatar
    Join Date
    Oct 2009
    Thanked 833 Times in 772 Posts
    Blog Entries

    Default Re: Overlapping multiple periods

    I'm not quite clear at what the goal is, but perhaps something like a Segment Tree data structure might help?

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