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Re: Combining elements of a list

  • To: mathgroup at smc.vnet.net
  • Subject: [mg108866] Re: Combining elements of a list
  • From: "Dr. S. S. Tong" <sstong at phy.cuhk.edu.hk>
  • Date: Sun, 4 Apr 2010 07:47:21 -0400 (EDT)

On Sat, 3 Apr 2010 06:09:05 -0500 (EST), ebaugh wrote
> How could I go from:
> {h,e,l,l,o}
> to
> {hello}?
> 
> That is the first step of what I am really looking to do. Which is 
> to go from:
> {{t,h,i,s},{i,s},{a},{t,e,s,t},{m,e,s,s,a,g,e}}
> to
> "this is a test message"
> 
> Thanks all,
> Jason Ebaugh

The following will do (assuming the elements in your lists are strings):

StringJoin[{"h", "e", "l", "l", "o"}]

StringJoin @@ 
 Riffle[{{"t", "h", "i", "s"}, {"i", "s"}, {"a"}, {"t", "e", "s", 
    "t"}, {"m", "e", "s", "s", "a", "g", "e"}}, " "]

Shiu-sing


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