Below are some statements about Quicksort and Heapsort. Which of the statements is correct when sorting a large number of elements? A. Heapsort and Quicksort have the same time complexity in the mean case. B. When implementing Quicksort, an extra array is usually used in addition to the one on which the sorting is performed. C. If the first element is selected as the pivot element at Quicksort, Quicksort will be faster than Heapsort when the sequence to be sorted is already almost sorted. D. Heapsort performs the sorting on linear time at its best.   Group of answer options All statements except B are correct Only statements A and C are correct Only statement A is correct All statements except D are correct All statements are correct

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Array

The simplest way to start thinking about an array is as a collection, or a set of elements. In programming, these elements may be constants, variables, functions and pointers.