can you explain me....what the logic is...behind the xor operation?...is it like inversion or encryption?
On Thu, Jun 23, 2011 at 11:59 AM, sunny agrawal <[email protected]>wrote: > initially compute xor of all the values from 0 to n in a variable Temp > so temp = 0^1^2........^n > let result is used to store the missing number > for each ith bit of missing number where i = 0-31 we can find it as > following > ith bit of result = (xor of all ith bits of values of array) xored with > (ith > bit of temp) > > On Thu, Jun 23, 2011 at 12:25 AM, oppilas . <[email protected]>wrote: > >> Is the array sorted? >> In A[1..n], one number is missing from 0 to N. So, >> A[5]={--INF, 2,1,3,0} is a valid case? >> >> >> On Wed, Jun 22, 2011 at 11:51 PM, RollBack <[email protected]> wrote: >> >>> An array A[1...n] contains all the integers from 0 to n except for one >>> number which is >>> missing. In this problem, we cannot access an entire integer in A with >>> a single opera- >>> tion. The elements of A are represented in binary, and the only >>> operation we can use >>> to access them is “fetch the jth bit of A[i]”, which takes constant >>> time. Write code to >>> find the missing integer. Can you do it in O(n) time? >>> _ >>> _ _____________________________________________ >>> >>> Rajeev N Bharshetty >>> I Blog @ www.opensourcemania.co.cc >>> >>> -- >>> 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. >> > > > > -- > 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 [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.
