Re: Identical elements
- To: mathgroup at smc.vnet.net
- Subject: [mg88564] Re: Identical elements
- From: "Dana DeLouis" <dana.del at gmail.com>
- Date: Thu, 8 May 2008 04:16:04 -0400 (EDT)
Please disregard my suggestion of KroneckerDelta.
I didn't realize it is not efficient for large data. (By a large factor)
d = Table[5, {100000}];
Timing[KroneckerDelta @@ d]
{93.32, 1}
Timing[Boole[SameQ @@ d]]
{0., 1}
--
Dana DeLouis
Mathematica 6.01 (Windows Vista)
"KFUPM" <hussain.alqahtani at gmail.com> wrote in message
news:fvhe2h$3th$1 at smc.vnet.net...
> Dear All
>
> I have a list and i need to test whether all the elements in the list
> are identical or no. What is the efficient way to do that? The output
> should be true if all elements are the same and False otherwise. One
> line command is preferred if possible.
>
> Your help is highly appreciated.
>
> Regards,
>
> HMQ
>