In merge sort, allocating and initializing an array many times during the recursive calls to merge is the only way to ensure the algorithm will work correctly is the only way the merge process will work is a waste of time and space all of the choices
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Step 1: The question asks about the efficiency of allocating and initializing an array many times during the recursive calls in merge sort. Show more…
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Consider QuickSort on the array A[1:n] and assume that the pivot element x (used to split the array A[lo:hi] into two portions such that all elements in the left portion A[lo:m] are ≤x and all elements in the right portion A[m:hi] are ≥x) is the penultimate element of the array to be split (i. e., A[hi - 1]). Construct an infinite sequence of numbers for n and construct an assignment of the numbers 1...n to the n array elements that causes QuickSort, with the stated choice of pivot, to (a) execute optimally (that is A[lo:m] and A[m:hi] are always of equal size) (b) execute in the slowest possible way.
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