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Math Forum » Discussions » Software » comp.soft-sys.math.mathematica

Topic: Bug in Sort !?!?
Replies: 4   Last Post: Jun 22, 2012 3:01 AM

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James Stein

Posts: 126
Registered: 5/8/10
Bug in Sort !?!?
Posted: Jun 19, 2012 3:18 AM
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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

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