void merge(int a[], int n, int i)
{
if(i == 1)
{
arr[1] = arr[n];
arr[2] = arr[n << 1];
return;
}
int a = arr[i - 1];
int b = arr[n + i - 1];
int c = arr[2*n + i - 1];
merge(arr, n, i - 1);
int x = 3 * (i - 1);
arr[x] = a;
arr[x + 1] = b;
arr[x + 2] = c;
}
Call merge(a, n/3, n/3);
I am assuming n is a multiple of 3...I don't know whether the above
solution satisfies ur conditions...
On 6/6/11, siva viknesh <sivavikne...@gmail.com> wrote:
> @piyush...i think u can use anything..but give a optimal solution
>
> On Jun 5, 9:22 pm, Piyush Sinha <ecstasy.piy...@gmail.com> wrote:
>> Can we use recursion/internal stack memory???
>>
>> On 6/5/11, hary rathor <harry.rat...@gmail.com> wrote:
>>
>> > it it is possible in order of O(n )
>>
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>> *Piyush Sinha*
>> *IIIT, Allahabad*
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