Question: Algorithms please answer 3,4 and explain why 3 We can express insertion sort as a recursive procedure as follows. In order to sort A[1.n]. we

Algorithms please answer 3,4 and explain why 3 We can express

Algorithms please answer 3,4 and explain why

3 We can express insertion sort as a recursive procedure as follows. In order to sort A[1.n]. we recursively sort A[1.n-1] and then insert A[n] into the sorted array A[L.n-1]. Write a recurrence for the running time of this recursive version of insertion sort. 4) Describe a (nlgn)-time algorithm that, given a set S of n integers and another integer x, determines whether or not there exist two elements in S whose sum is exactly x. 5. What is the recurrence of the power20 function (source code available on the class website)? What is its running time? Is it faster than the iterative way

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