@mithun: Try A = 1, 6 B = 4, 3 A ^ B = 0.
Alone Ex-OR cant solve this in O(n) time. On Monday, 21 May 2012 21:48:30 UTC+5:30, mithun wrote: > > By doing Ex-OR we can find if b is permutation of A > > suppose a -- 3 5 4 > b -- 4 3 5 > if A ^ B = 0 then both are permutation or else not.... > > shout loud if this has flaws :P > > -mithun > > > > On Sun, May 20, 2012 at 12:59 AM, HARSHIT PAHUJA > <hpahuja.mn...@gmail.com>wrote: > >> given 2 unsorted integer arrays a and b of equal size. Determine if b is >> a permutation of a. Can this be done in O(n) time and O(1) space ? >> >> >> >> >> please help me with my solution >> >> >> suppose a -- 3 5 4 >> b -- 4 3 5 >> >> now we replace a[i] with a[i]..th prime number and b with b[i] .. th >> prime number >> >> now array a becomes 5 11 7 >> array b becomes 7 5 11 >> >> now we take product of elements of array a and do the same with array b >> elements >> if product is equal then b is a permutation of a >> >> -- >> 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. >> > > -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To view this discussion on the web visit https://groups.google.com/d/msg/algogeeks/-/M16KXaNqGnEJ. 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.
