Re: Sorting nested list
- To: mathgroup at smc.vnet.net
- Subject: [mg57462] Re: Sorting nested list
- From: Bill Rowe <readnewsciv at earthlink.net>
- Date: Sat, 28 May 2005 05:40:12 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
On 5/27/05 at 4:56 AM, plizak at gmail.com (plizak) wrote:
>I have a similar problem, I need to sort the same kind of list
>{{a,{2,4,1.,...}}, {c, {1,2,...}},{b,{3.2,-2,.â? ..}}}
>but I need to sort it based on the first element of each subarray,
>while keeping the second element the same.
>I did a pretty ugly solution (like 12 lines of code). Is there a
>quicker more elegant way to sort this?
Is this what you want?
In[8]:=
data = {{a, {2, 4, 1.}}, {c, {1, 2}}, {b, {3.2, -2}}};
Sort[data, OrderedQ[{#1[[2,1]], #2[[2,1]]}] & ]
Out[9]=
{{c, {1, 2}}, {a, {2, 4, 1.}}, {b, {3.2, -2}}}
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