August 2024
Intermediate to advanced
516 pages
11h 47m
English
Content preview from A Common-Sense Guide to Data Structures and Algorithms in JavaScript, Volume 1
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Quicksort in the Worst-Case Scenario
For many other algorithms we’ve encountered, the best case was one where the array was already sorted. When it comes to Quicksort, however, the best-case scenario is one in which the pivot always ends up smack in the middle of the subarray after the partition. Interestingly, this generally occurs when the values in the array are mixed up pretty well.
The worst-case scenario for Quicksort is one in which the pivot always ends up on one side of the subarray instead of in the middle. This can happen where the array is in perfect ascending or descending order. The visualization for this process is shown here:
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