Question: Quicksort reaches the worst - case time complexity when: Quicksort reaches the worst - case time complexity when: Picking the largest one of input data

Quicksort reaches the worst-case time complexity when:
Quicksort reaches the worst-case time complexity when:
Picking the largest one of input data as the pivot value
Median of input or partitioned data is expensive to calculate
Partition is not implemented in place
Data is sorted already and always pick the median as pivot

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