@coolfrog in case of AB we asked to A know B after checking this we eliminate A n same case go for CD den
A B CD | | A D AD Same approach | D (D will be celebrity) On Fri, Sep 24, 2010 at 10:57 AM, kartheek muthyala <kartheek0...@gmail.com>wrote: > @coolfrog, > > What I meant by remained is > > Considering your case of A,B,C,D and B is the celebrity, > > The sequence is > > First A,B ask the question to A, then remained=B > Then B,C ask the question to B, then remained=B > Then B,D ask the question to B, then remained= B > Then ask A,C,D whether they know B > Then ask B whether they know A,C,D > > So, that's how I said 3(n-1) questions... > Correct me if I am wrong > > On Thu, Sep 23, 2010 at 8:32 PM, coolfrog$ < > dixit.coolfrog.div...@gmail.com> wrote: > >> >> @kartheek >> i am getting. this prudent approach.... >> but what is "add what remained to the remainder." >> suppose u have A,B,C,D and B is celebrity ... >> >> if( A knows B) >> { A is not celb. >> if( B knows C){} >> else{ C is not celb. >> if (C knows B ) >> { if( D knows B) >> { D is not celb. >> only B remain... hence it celeb... >> /* suppose if u have A,B,C,D,E >> and B is celeb. >> then again if (E knows B) >> { E is not >> celb.... >> only B >> remain... hence it celeb... >> } >> */ >> } >> } >> } >> } >> look in every if condition we are Asking Sequentially to A >> ,B,C,D,E....... >> can these be correct solution .... >> correct me plz... if wrong...... >> On Thu, Sep 23, 2010 at 12:56 AM, kartheek muthyala < >> kartheek0...@gmail.com> wrote: >> >>> Take 2 persons, suppose say A and B >>> ask one of them the question about other >>> if A Knows B, then A cannot be the celebrity, >>> if A does not know B, then B cannot be the celebrity. >>> add what remained to the remainder. >>> >>> repeat this process for the remaining n-1 until one or none remained. >>> >>> Then if it is none then there is no celebrity. >>> If there is one ask the question whether this person is known by >>> remaining n-1 and this person does n't know the remaining n-1. So a total of >>> 3(n-1) questions is used to determine the celeb. >>> >>> Time complexity is O(n). >>> >>> Repeat this for the remaining n-1 persons, if the remainder contain one >>> then >>> >>> >>> On Wed, Sep 22, 2010 at 9:37 PM, Divesh Dixit < >>> dixit.coolfrog.div...@gmail.com> wrote: >>> >>>> Among n people, a celebrity is defined as someone who is known to >>>> everyone, but who knows no >>>> one. Design and analyze to identify the celebrity, if one exists, by >>>> asking only questions of the >>>> following form: "Excuse me, do you know person x?" You will get a >>>> binary answer for each such >>>> question asked. Find the celebrity by asking only O(n) questions. >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Algorithm Geeks" group. >>>> To post to this group, send email to algoge...@googlegroups.com. >>>> To unsubscribe from this group, send email to >>>> algogeeks+unsubscr...@googlegroups.com<algogeeks%2bunsubscr...@googlegroups.com> >>>> . >>>> For more options, visit this group at >>>> http://groups.google.com/group/algogeeks?hl=en. >>>> >>>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "Algorithm Geeks" group. >>> To post to this group, send email to algoge...@googlegroups.com. >>> To unsubscribe from this group, send email to >>> algogeeks+unsubscr...@googlegroups.com<algogeeks%2bunsubscr...@googlegroups.com> >>> . >>> For more options, visit this group at >>> http://groups.google.com/group/algogeeks?hl=en. >>> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Algorithm Geeks" group. >> To post to this group, send email to algoge...@googlegroups.com. >> To unsubscribe from this group, send email to >> algogeeks+unsubscr...@googlegroups.com<algogeeks%2bunsubscr...@googlegroups.com> >> . >> For more options, visit this group at >> http://groups.google.com/group/algogeeks?hl=en. >> > > -- > You received this message because you are subscribed to the Google Groups > "Algorithm Geeks" group. > To post to this group, send email to algoge...@googlegroups.com. > To unsubscribe from this group, send email to > algogeeks+unsubscr...@googlegroups.com<algogeeks%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/algogeeks?hl=en. > -- Thanks & Regards Umesh kewat -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to algoge...@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.