for merge sort extra space will be needed
On Mon, Feb 7, 2011 at 3:10 PM, arpit busy in novels <
[email protected]> wrote:
> Hey i m just a newbie To group BTW from MNIT jaipur 3rd yr CS
>
> I just though we should apply merge sort < mean merge 2 array into one )
> on 1st row & 1st column <this will be accurate since rows & columns r
> Sorted) next we move down the diagnol 1 step & apply the same merge sort
> n so on < cant say much abt complexity but it feels effective)
>
>
>
> for (i=0,j=0;i<n& j<n)
> {
> k[]=merge ( a[0,0] row & column)
> i++,j++;
> }
>
>
>
>
>
> On Mon, Feb 7, 2011 at 2:49 PM, jalaj jaiswal
> <[email protected]>wrote:
>
>> isn't mnlog(mn)(simple quick sorting the entire array) better then
>> mnlog(m+n)
>>
>>
>>
>> On Mon, Feb 7, 2011 at 2:46 PM, sunny agrawal <[email protected]>wrote:
>>
>>> one of the possible methods is to use concept same as EXTRACT-MIN of
>>> heaps
>>>
>>> do the following steps *m*n *times
>>> 1. print a[0][0] ans replace this by a[m-1][n-1]
>>> 2. call REORDER(0,0)
>>>
>>> in REORDER(i,j) function we perform following operations to make array's
>>> all row's and column's sorted
>>> 1.if a[i,j] <= a[i+1][j] && a[i,j] <= a[i][j+1], its done
>>> else swap with min a[i+1,j] and a[i,j+1] and keep going in same way
>>>
>>> ans also boundary checks are also important...
>>>
>>> TC: O(mn(m+n))
>>> SC: O(1)
>>>
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>>
>>
>>
>> --
>> With Regards,
>> *Jalaj Jaiswal* (+919019947895)
>> Software developer, Cisco Systems
>> Final Year Undergraduate,
>> IIIT ALLAHABAD
>>
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>
>
>
> --
> Arpit Bhatnagar
> (MNIT JAIPUR)
>
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With Regards,
*Jalaj Jaiswal* (+919019947895)
Software developer, Cisco Systems
Final Year Undergraduate,
IIIT ALLAHABAD
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