2047 calls to the quicksort() function are made to sort a list of 1024 elements.
The initial call counts for 1. After that, N - 1 partitioning levels exist, and each level makes 2 recursive calls. 1+2⋅(1024−1) = 2047 calls
Quicksort: A Divide Conquer algorithm is the quickest sorting method. In quick sort, the pivot element and the element greater than the pivot element are placed in separate empty arrays, and the sub-arrays are then sorted recursively.
If the right-side elements are smaller when 40 is compared to them, swap it out. Since 20 is less than 40, swap them. 20 30 10 50 70 90 40 60 90 40 80. Change the elements after comparing 40 to the element on the left, which must be greater than 40.
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