@vivek, Where do you store pairs sum ?, Space is O(N) ... :)
Thanks, Sathaiah On Mon, May 3, 2010 at 9:03 PM, vivek bijlwan <viv...@gmail.com> wrote: > copy the array(A) in a different array(B) to store the index info.(space > O(n)) > sort(A) > take each pair's sum ( complexity O(n^2) ) and with that do a binary > search for the 3rd element needed.(O(log(n))). > > Check for the indices in B. > > i believe it can be done in better time somehow. > > > On Mon, May 3, 2010 at 6:48 PM, jalaj jaiswal > <jalaj.jaiswa...@gmail.com>wrote: > >> >> given an array(unsorted) may contain negative numbers too >> find the index of three numbers whose sum is closest to zero in O(N2log N) >> time and O(N) space. >> >> P.S -3 is more close to zero then -6 (number line ...) >> -- >> With Regards, >> Jalaj Jaiswal >> +919026283397 >> B.TECH IT >> IIIT ALLAHABAD >> >> -- >> 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. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.