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Re: Bug in Sort !?!?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg126986] Re: Bug in Sort !?!?
  • From: James Stein <mathgroup at stein.org>
  • Date: Fri, 22 Jun 2012 02:59:50 -0400 (EDT)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • References: <jrp94p$qbs$1@smc.vnet.net> <201206210915.FAA15894@smc.vnet.net>

KKL is correct; my apologies to all.

On Thu, Jun 21, 2012 at 2:15 AM, nanobio9 <kuokan.liang at gmail.com> wrote:
> On 6=E6=9C=8819=E6=97=A5, =E4=B8=8B=E5=8D=883=E6=99=8218=E5=88=86, James Stein <mathgr... at stein.org> wrote:
>> The documentation says: "Sort orders strings as in a dictionary, with
>> uppercase versions of letters coming after lowercase ones." It is
>> therefore unsurprising that { "3", "4", "4b" } are already sorted.
>> But who can correctly predict the three True/False values produced by
>> the six lines below? (And who can explain it?)
>>
>> s={"3","4","4b"};
>> Sort[s] == s
>> s=Map[StringJoin[#,"."]&,s];
>> Sort[s] == s
>> s=Map[StringJoin[#,"nb"]&,s];
>> Sort[s] == s
>
> The character code of "." is 46, smaller than "a", "1", etc. I do not
> see a bug here.
>
> Regards,
> KKL
>



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