@sunny finding lca in logn is fine, but how can we traverse the path in logn.. ?
On Fri, Jun 10, 2011 at 3:50 PM, sunny agrawal <sunny816.i...@gmail.com>wrote: > @ross if a parent pointer is there lca can be found in lgn > and path can be traversed in lgn too > why it cannot be lgn > what is the problem ?? > > > On Fri, Jun 10, 2011 at 3:06 PM, sunny agrawal <sunny816.i...@gmail.com>wrote: > >> thats why i mentioned x OR z and i m considering parent pointer :) >> without parent pointer both solutions will be O(n) :) >> >> >> On Fri, Jun 10, 2011 at 3:02 PM, Harshal <hc4...@gmail.com> wrote: >> >>> @Sunny >>> I am assuming that the tree is rooted. There is no 'parent' pointer. >>> A >>> / \ >>> B C* >>> / \ >>> D* F* >>> / \ >>> J K >>> / \ >>> M* >>> >>> suppose x=D, y=C, z=F >>> According to you, finding the lca of x and z=> A >>> Now y lies on path from lca to z, but it doesn't lie on path from x to z. >>> Am I missing something? >>> >>> >>> On Fri, Jun 10, 2011 at 2:50 PM, sunny agrawal >>> <sunny816.i...@gmail.com>wrote: >>> >>>> but that will be O(n) i think >>>> >>>> >>>> On Fri, Jun 10, 2011 at 2:38 PM, Harshal <hc4...@gmail.com> wrote: >>>> >>>>> can be solved using dfs. >>>>> >>>>> >>>>> On Fri, Jun 10, 2011 at 2:27 PM, sunny agrawal < >>>>> sunny816.i...@gmail.com> wrote: >>>>> >>>>>> find common Ancestor of both. see if y lies on path from x or z to >>>>>> this ancestor >>>>>> O(lgn) >>>>>> >>>>>> >>>>>> On Fri, Jun 10, 2011 at 1:20 PM, aanchal goyal < >>>>>> goyal.aanch...@gmail.com> wrote: >>>>>> >>>>>>> There is a binary tree(Not a BST) in which you are given three nodes >>>>>>> x,y,z .Write a function which finds whether y lies in the path b/w x >>>>>>> and z. >>>>>>> >>>>>>> -- >>>>>>> Regards,* >>>>>>> Aanchal Goyal*. >>>>>>> >>>>>>> -- >>>>>>> You received this message because you are subscribed to the Google >>>>>>> Groups "Algorithm Geeks" group. >>>>>>> To post to this group, send email to algogeeks@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. >>>>>>> >>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> Sunny Aggrawal >>>>>> B-Tech IV year,CSI >>>>>> Indian Institute Of Technology,Roorkee >>>>>> >>>>>> >>>>>> -- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "Algorithm Geeks" group. >>>>>> To post to this group, send email to algogeeks@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. >>>>>> >>>>> >>>>> >>>>> >>>>> -- >>>>> Harshal Choudhary, >>>>> III Year B.Tech CSE, >>>>> NIT Surathkal, Karnataka, India. >>>>> >>>>> >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "Algorithm Geeks" group. >>>>> To post to this group, send email to algogeeks@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. >>>>> >>>> >>>> >>>> >>>> -- >>>> Sunny Aggrawal >>>> B-Tech IV year,CSI >>>> Indian Institute Of Technology,Roorkee >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Algorithm Geeks" group. >>>> To post to this group, send email to algogeeks@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. >>>> >>> >>> >>> >>> -- >>> Harshal Choudhary, >>> III Year B.Tech CSE, >>> NIT Surathkal, Karnataka, India. >>> >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "Algorithm Geeks" group. >>> To post to this group, send email to algogeeks@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. >>> >> >> >> >> -- >> Sunny Aggrawal >> B-Tech IV year,CSI >> Indian Institute Of Technology,Roorkee >> >> > > > -- > Sunny Aggrawal > B-Tech IV year,CSI > Indian Institute Of Technology,Roorkee > > -- > You received this message because you are subscribed to the Google Groups > "Algorithm Geeks" group. > To post to this group, send email to algogeeks@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. > -- Regards,* Aanchal Goyal*. -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to algogeeks@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.
