this is an unstable but efficient algorithm to sort large input array and it have only two phase divide and conquer phase ,combine phase is not present here,,,so C option is correct Divide and Conquer technique

The recurrence relation that arises in relation with the complexity of binary search is: $T(n) = 2T\left(\frac{n}{2}\right)+k, \text{ k is a constant }$ $T(n) = T\left(\frac{n}{2}\right)+k, \text{ k is a constant }$ $T(n) = T\left(\frac{n}{2}\right)+\log n$ $T(n) = T\left(\frac{n}{2}\right)+n$

The average number of key comparisons required for a successful search for sequential search on $n$ items is $\frac{n}{2}$ $\frac{n-1}{2}$ $\frac{n+1}{2}$ None of the above

Which of the following conversions is not possible (algorithmically)? Regular grammar to context free grammar Non-deterministic FSA to deterministic FSA Non-deterministic PDA to deterministic PDA Non-deterministic Turing machine to deterministic Turing machine