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 <sunny816.i...@gmail.com>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 . <jatka.oppimi...@gmail.com>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 <rajeevr...@gmail.com> 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
>>>
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>
>
>
> --
> Sunny Aggrawal
> B-Tech IV year,CSI
> Indian Institute Of Technology,Roorkee
>
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