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.
