Re: Ordering function weird?
- To: mathgroup at smc.vnet.net
- Subject: [mg82676] Re: Ordering function weird?
- From: Alfred Heiligenbrunner <xyz at abc.de>
- Date: Sun, 28 Oct 2007 04:01:16 -0500 (EST)
- References: <ffv29v$aph$1@smc.vnet.net>
Claus schrieb am 27.10.2007 12:01:
> Can anybody explain to me Ordering[y]?
>
>
> In[3]:= x = {1, 2, 3, 6, 10, 3, 4}
> y = {1, 2, 7, 8, 9, 1, 2}
>
>
> In[7]:= Ordering[x]
> Ordering[y]
>
> Out[7]= {1, 2, 3, 6, 7, 4, 5}
>
> Out[8]= {1, 6, 2, 7, 3, 4, 5}
>
y[[Ordering[y]]] is a sorted list. Seems ok. What's weird on it?
In[9]:= y[[Ordering[y]]]
Out[9]= {1,1,2,2,7,8,9}