@ jai nice solution

I think for O(n) solution we will have to use extra array.
Otherwise we will have to do this in O(nlogn).
Correct me if i am wrong.


On Thu, Dec 23, 2010 at 1:04 PM, jai gupta <sayhelloto...@gmail.com> wrote:

> make  another array(B) from (A) with all elements negated
> now find one element from B and one from A  whose sum is x or -x. This can
> ofcourse be done in O(n).
>
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-- 
Amit Jaspal
Btech IT IIIT- Allahabad

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