oops!
Anurag Sharma
On Mon, May 17, 2010 at 5:00 PM, Navin Naidu <navinmna...@gmail.com> wrote:
> @anurag:
>
> -99 -2 -1 3 +99
>
> The min sum (=0) for value pair (-99, 99)
>
> Now skip, +99 and -99, so -1 will be selected: (99, -99, -1) = -1
>
> Actual result: -2, -1, 3 : 0
>
>
>
>
>
> On Mon, May 17, 2010 at 8:48 AM, Anurag Sharma <anuragvic...@gmail.com>wrote:
>
>> @Navin : Let me work out the case you gave me array={-99,0,2,-1,99}
>>
>> 1. Sort the array in nlogn time: array={-99,-1,0,2,99}
>>
>> 2. consider all possible pairs of numbers and keep track of the sum
>> closest 2 zero:
>> -99+-1=-100, |-100|=100
>> -99+0=-99,|-99|=99
>> -99+2=-97,|-97|=97
>> -99+99=0,|0|=0 <------- this is the minimum sum(=0) for value pair (-99,
>> 99)
>> -1+0=-1,|-1|=1
>> -1+2=1,|1|=1
>> -1+99=98,|98|=98
>> 0+2=2,|2|=2
>> 0+99=99,|99|=99
>> 2+99=101,|101|=101
>>
>>
>> 3. Now traversing the array skipping the values -99, 99 and trying to get
>> minimum sum after including it in the existing sum :
>> array={-99,-1,0,2,99}
>> take -99: skip
>> take -1: 0+-1= -1 and |-1|=1
>> take 0: 0+0=0 and |0|=0 <---- this is the minimum so the third number is
>> 0
>> take 2: 0+2=2 and |2|=2
>> take 99: skip
>>
>> this way we got the three numbers as -99,99 and 0. Were you expecting some
>> other combo?
>> In step 3 we can skip checking the rest of the elements when we find the
>> sum increasing as the array is already sorted.
>>
>> Let me know if there is still some issue in it.
>>
>>
>> Regards,
>>
>> Anurag Sharma
>>
>>
>>
>> On Sun, May 16, 2010 at 9:26 PM, Navin Naidu <navinmna...@gmail.com>wrote:
>>
>>>
>>> @anurag: wont work, consider the following case: -99 0 2 -1 99
>>>
>>>
>>>
>>>
>>>
>>> On Sun, May 16, 2010 at 9:12 PM, Rohit Saraf <
>>> rohit.kumar.sa...@gmail.com> wrote:
>>>
>>>> @anurag : won't work
>>>> --------------------------------------------------
>>>> Rohit Saraf
>>>> Second Year Undergraduate,
>>>> Dept. of Computer Science and Engineering
>>>> IIT Bombay
>>>> http://www.cse.iitb.ac.in/~rohitfeb14<http://www.cse.iitb.ac.in/%7Erohitfeb14>
>>>>
>>>>
>>>>
>>>>
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>>>
>>>
>>> --
>>> Thanks & Regards,
>>>
>>> - NMN
>>>
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>
>
>
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> Thanks & Regards,
>
> - NMN
>
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