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summarize the operation of a quicksort algorithm
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quicksort is a divide-and-conquer algorithm that recursively sorts a list of elements. it begins by selecting a pivot element, which divides the list into two partitions, then recursively sorts the sub-partitions by repeating the process until the list is fully sorted. quicksort is efficient in practice and can be most easily implemented with an in-place partitioning algorithm, so it has good space complexity.
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