Re: help^please

*To*: mathgroup at smc.vnet.net*Subject*: [mg97966] Re: help^please*From*: David Bailey <dave at removedbailey.co.uk>*Date*: Thu, 26 Mar 2009 05:43:38 -0500 (EST)*References*: <gqd1o0$nqq$1@smc.vnet.net>

Fabrizio wrote: > There are 3 small problems. > > 1)Using the functions: > > Position, ReplacePart, Take, Drop, Part, Rest, First and Last > > I have to get { { 1 } , { 2 , 3 , 4 , 5 , 6 } } out of Range[ 6 ] > > > 2) Using the functions: > > Table, Random, Range > > I have to get { {0} , { 0 , 2 } , { 0 , 2 , 4 } , { 0 , 2 , 4 , 6 } , { 0 , 2 , 4 , 6 , 8 } } in TWO ways. > > ---> I found for this second problem: > > Table[ 2 * j - 2 , { i , 5 } , { j , i } ] > > but another method using the same functions ? > > 3)using the functions as in problem 1: > > Use the lists { a , b , c , d } and { 3 , 2 , 4 , 1 } to create the list { c , b , d , a } in one step. > > complete moron > The only way you could be faced with a requirement like that, is as a college exercise! If you get help to solve your exercises, that will leave you no more skilled than before - so there would not be any point, would there? David Bailey http://www.dbaileyconsultancy.co.uk