Re: "expanding a list"

*To*: mathgroup at smc.vnet.net*Subject*: [mg57890] Re: "expanding a list"*From*: Bill Rowe <readnewsciv at earthlink.net>*Date*: Sat, 11 Jun 2005 03:35:55 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

On 6/10/05 at 2:29 AM, mark at markscoleman.com (Mark Coleman) wrote: >Greetings, > >I'd like to construct a list as follows. Say I have a list of reals >{x1,x2,x3,...xn}, and another list of integers {r,s}. I'd like to >make a new list >{{x1,x1,x1,...},{x2,x2,x2....},{x3,x3,x3,...},....,{xn,xn,xn,...}}, >where the first sublist is of length r, and the remaining sublists >are of length s. Assume lst is set to your list of reals, then Join[{Table[First@lst,{r}]},Rest@Transpose@Table[lst, {s}]] should give you what you want. -- To reply via email subtract one hundred and four