All componens different
- To: mathgroup at smc.vnet.net
- Subject: [mg111996] All componens different
- From: "Dr. Wolfgang Hintze" <weh at snafu.de>
- Date: Mon, 23 Aug 2010 02:51:46 -0400 (EDT)
Given a list v of natural numbers I'm looking for a function d[v_] that
returns True if all components are different and False otherwise.
One solution is
d1[v_] := ! Or @@ Flatten[Table[v[[i]] == v[[k]], {i, 1, Length[v]},
{k, i + 1, Length[v]}]]
Can you find more efficient (and elegant) solutions?
Regards,
Wolfgang