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MathGroup Archive 2012

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List Manipulation

  • To: mathgroup at smc.vnet.net
  • Subject: [mg124895] List Manipulation
  • From: Murta <rodrigomurtax at gmail.com>
  • Date: Sat, 11 Feb 2012 06:36:12 -0500 (EST)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com

Hi All

I'm looking some better solution for the below list manipulation:
l1={a,b,c};
l2={{1,2,3},{4,5,6},{7,8,9}};
output = {{a,1},{a,2},{a,3},{b,4},{b,5},{b,6},{c,7},{c,8},{c,9}}
It's a simple distributions of terms.

I used this solution, but I think it's not an elegant one:

f[a_, b_] := Flatten[{a, #}] & /@ b;
MapThread[f, {l1, l2}] // Flatten[#, 1] &

Some clue?
Maybe with Outer or Inner?
Thanks in advance!
Murta



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