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QWhat is the time complexity of a quicksort algorithm for sorting an array of n elements in the worst case?

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  • A O(1) ✔ ✖
  • B O(log n) ✔ ✖
  • C O(n) ✔ ✖
  • D O(n^2) ✔ ✖
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Quicksort is a comparison-based sorting algorithm that divides the array into two subarrays based on a pivot element, recursively sorts the subarrays, and combines them. In the worst case, if the pivot selection consistently results in unbalanced partitions, quicksort degrades to its quadratic time complexity. This occurs when the pivot is always the minimum or maximum element, leading to n recursive calls and resulting in a time complexity of O(n^2).

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