Sum wont overflow, ULL range will include sum.
On Thu, Jun 9, 2011 at 3:52 PM, sunny agrawal <sunny816.i...@gmail.com>wrote:
> sum can overflow....
> Xor method can also be applied to Q1. no need of numbers to be sorted.
>
> 2011/6/9 • » νιρυℓ « • <vipulmehta.1...@gmail.com>
>
>> For 1.
>> sum the numbers in the file, subtract it from sum of first 4 billion
>> numbers.
>>
>>
>> On Thu, Jun 9, 2011 at 3:44 PM, Navneet Gupta <navneetn...@gmail.com>wrote:
>>
>>> The answer to second question is simple. XORing all the elements
>>> should do it for you.
>>>
>>>
>>> On Thu, Jun 9, 2011 at 3:15 PM, Dumanshu <duman...@gmail.com> wrote:
>>> > Q1. I have a file in which there are supposed to be 4 billion
>>> > numbers,
>>> > starting from 1 to 4,000,000,000 but unfortunately one number is
>>> > missing,
>>> > i.e there are only 3,999,999,999 numbers, I need to find the missing
>>> > number.
>>> >
>>> >
>>> > Q2. I have an array consisting of 2n+1 elements. n elements in it are
>>> > married, i.e they occur twice in the array, however there is one
>>> > element
>>> > which only appears once in the array. I need to find that number in a
>>> > single pass using constant memory. {assume all are positive numbers}
>>> > Eg :- 3 4 1 3 1 7 2 2 4
>>> > Ans:- 7
>>> >
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>>>
>>>
>>>
>>> --
>>> --Navneet
>>>
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>>
>>
>> --
>> Regards,
>> Vipul
>>
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>
>
>
> --
> Sunny Aggrawal
> B-Tech IV year,CSI
> Indian Institute Of Technology,Roorkee
>
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--
Regards,
Vipul
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