I do believe that a palindrome could be defined as user> (defn palindrome [s] (= s (clojure.string/reverse s))) ;; => #'user/palindrome user> (palindrome "agnesisenga") ;; => true user>
No need to split in half. > On 7. okt. 2015, at 20.24, Tristan Strange <tristan.stra...@gmail.com> wrote: > > Hey Roelof, > > Moe's answered your question perfectly. > > Unfortunately I'm not sure it'll help you. All that's been written up > there is a reverse function that works on both a string and a > sequence. > > Firstly I think you might need to check up on what a palindrome is: > https://en.wikipedia.org/wiki/Palindrome > > You need to: > - take the first half of the sequence > - take second half > - compare them > > and work around the fact that sometimes sequences have an odd number > of elements. > > Have you seen the take and drop functions yet? They'd really help. As > would Math/floor and Math/ceil. Those, a reverse and an = will make > bob your uncle. > > If you haven't seen them writing a recursive function would be a solution too. > > I'm not sure what the "hint" is about. It seems very misleading to me. > > Good luck! > > Cheers, > Tristan > > > On 7 October 2015 at 19:06, Moe Aboulkheir <m...@nervous.io> wrote: >> Roelof, >> >> Something like this: >> >> (defn palindrome [x] >> (if (string? x) >> (clojure.string/reverse x) >> (into (empty x) (reverse x)))) >> >> Alternatively, you may want to consider explicitly using seq on your inputs >> when you get them, and using that of the basis of comparison & input to >> reverse. If you don't actually care about the concrete sequence type (i.e. >> you only want sensible equality semantics after reversing something), >> dropping it as soon as possible may be a better strategy. >> >> Take care, >> Moe >> >> On Wed, Oct 7, 2015 at 6:51 PM, Roelof Wobben <wobbenroe...@gmail.com> >> wrote: >>> >>> Hello, >>> >>> I try to solve a problem for 4clojure where I have to make a palingdrome >>> detector. >>> >>> So for trying I did this : >>> >>> (ns fourclojure.core >>> (:gen-class)) >>> >>> >>> (defn palingdrome [string] >>> ( reverse string)) >>> >>> (apply str (palingdrome '( 1 2 3) )) '321' >>> (apply str (palingdrome "Roelof" )) "foleoR" >>> >>> (defn palingdrome2 [string] >>> ( reverse string)) >>> >>> (palingdrome2 '( 1 2 3) ) ( 3 2 1 ) >>> (palingdrome2 "Roelof" ) (\f \o \l \e \o \R) >>> >>> So it works for a map or for a string. >>> >>> Is there a way I can make it work for both ? >>> >>> Roelof >>> >>> >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Clojure" group. >>> To post to this group, send email to clojure@googlegroups.com >>> Note that posts from new members are moderated - please be patient with >>> your first post. >>> To unsubscribe from this group, send email to >>> clojure+unsubscr...@googlegroups.com >>> For more options, visit this group at >>> http://groups.google.com/group/clojure?hl=en >>> --- >>> You received this message because you are subscribed to the Google Groups >>> "Clojure" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to clojure+unsubscr...@googlegroups.com. >>> For more options, visit https://groups.google.com/d/optout. >> >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clojure@googlegroups.com >> Note that posts from new members are moderated - please be patient with your >> first post. >> To unsubscribe from this group, send email to >> clojure+unsubscr...@googlegroups.com >> For more options, visit this group at >> http://groups.google.com/group/clojure?hl=en >> --- >> You received this message because you are subscribed to the Google Groups >> "Clojure" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to clojure+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with your > first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en > --- > You received this message because you are subscribed to the Google Groups > "Clojure" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to clojure+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
