The degenerate case has nothing to do with the ratio of used buckets to the number of total buckets.

The degenerate case occurs when the number of elements in the hash (0+keys(%hash)) is much greater than the number of buckets in use (0+%hash) because most of keys hash to the same value.

Locating a key in the degenerate case is a linear search since they're all in the same bucket.

In reply to Re^5: elsif chain vs. dispatch by ikegami
in thread elsif chain vs. dispatch by sflitman

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