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given a sorted array of distinct integers A[1........n], you want to find out whether there is an index i for which A[i]=i.if this problem is solved using divide and conquer method ,then the algorithm run in 

a) O(n)               a) O(nlogn)            a) O(logn)         a) O(n2)

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Ans- 0(logn)


int special_search(int a[],int l,int r)


   int mid;




         if(a[mid]==mid)   return mid;

         else if(a[mid]>mid) return special_search(a,l,mid-1);

          else return(a,mid+1,r)



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