in reply to Re^2: How to get this not the usual round robin looping
in thread How to get this not the usual round robin looping

This is good, but can be considerably simplified:  H1 => [1, 10, 11, 20, 21],

hmm, OP has  H1-> 1,8,9

Weird question :)( i need this sequence ... imagine the equation which I won't tell you )

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Re^4: How to get this not the usual round robin looping
by Athanasius (Archbishop) on Oct 13, 2015 at 07:15 UTC
    hmm, OP has H1-> 1,8,9

    My reply was addressed to kcott, not the OP, and so I used kcott’s dataset.

    imagine the equation which I won't tell you

    I thought the same at first, but if you lay out the sequence, the pattern becomes obvious when you read vertically:

    {
  H1 => [1, 8,  9],
  H2 => [2, 7, 10],
  H3 => [3, 6],
  H4 => [4, 5]
}

    [download]

    Discipulus, in the Chatterbox, identified it as an example of Boustrophedon, which seems like a pretty good description. :-)

    Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

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      Ah, see that is the kind of crucial detail the homework would have specified .... my version came out like :) 
      {
  H1 => [1, 8, 9],
  H2 => [2, 7, 10],
  H3 => [3, 6, 11],
  H4 => [4, 5, 12],
  H5 => [13, 20, 21],
}

      [download]
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Re^4: How to get this not the usual round robin looping
by dsheroh (Monsignor) on Oct 13, 2015 at 07:07 UTC
    The difference is because the OP only had H1-H4, while the post with the simplified version added an H5, making the loop longer.
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