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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