That solution is using the sign bit as extra storage, which is clever, but if you have an array of unsigned integers and N is more than half of the largest unsigned integer, it won't work. There is a way to do it without using the sign bit as extra storage.
On Oct 30, 5:16 pm, rahul sharma <[email protected]> wrote: > i thnik this is the solution...http://www.geeksforgeeks.org/archives/9755 > > > > > > > > On Wed, Oct 31, 2012 at 2:20 AM, Don <[email protected]> wrote: > > We can modify the array. The algorithm should work even if we use > > unsigned integers and N is the largest unsigned integer. > > > Don > > > On Oct 30, 4:42 pm, rahul sharma <[email protected]> wrote: > > > Can we modify the array???we can make index we visit as negative and then > > > if any one already containing -ve..then its repeating > > > > On Wed, Oct 31, 2012 at 1:40 AM, Don <[email protected]> wrote: > > > > Does your algorithm work if N=4 and the array is {1,1,2,2}. > > > > > Don > > > > > On Oct 30, 2:32 pm, arumuga abinesh <[email protected]> wrote: > > > > > if sum of all elements = n(n-1)/2 , no elements are repeated > > > > > else some numbers are repeated > > > > > > On Tue, Oct 30, 2012 at 11:57 PM, Don <[email protected]> wrote: > > > > > > Given an array of N integers in the range 0..N-1, determine if any > > > > > > number is repeated in the array. > > > > > > Solution should execute in O(n) time and use constant space. > > > > > > Don > > > > > > > -- > > > > > > You received this message because you are subscribed to the Google > > > > Groups > > > > > > "Algorithm Geeks" group. > > > > > > To post to this group, send email to [email protected]. > > > > > > To unsubscribe from this group, send email to > > > > > > [email protected]. > > > > > > 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 [email protected]. > > > > To unsubscribe from this group, send email to > > > > [email protected]. > > > > 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 [email protected]. > > To unsubscribe from this group, send email to > > [email protected]. > > 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 [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
