Re: Combining elements of a list

*To*: mathgroup at smc.vnet.net*Subject*: [mg108847] Re: Combining elements of a list*From*: Albert Retey <awnl at gmx-topmail.de>*Date*: Sun, 4 Apr 2010 07:43:35 -0400 (EDT)*References*: <hp7735$krb$1@smc.vnet.net>

Hi, > 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" > If you want to join strings, use StringJoin :-) this works if the entries are symbols: letters={{t, h, i, s}, {i, s}, {a}, {t, e, s, t}, {m, e, s, s, a, g, e}} StringJoin[Riffle[Map[ToString,letters,{2}], " "]] if the entries are strings already, this would be enough: letters = {{"t", "h", "i", "s"}, {"i", "s"}, {"a"}, {"t", "e", "s", "t"}, {"m", "e", "s", "s", "a", "g", "e"}} StringJoin[Riffle[letters, " "]] hth, albert