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17.1 BST Performance
One unforunate feature of BSTs is that they range from a best-case "bushy" tree to a worst-case "spindly" tree.
In the best case, our tree will have height
, whereas in the worst case our tree has a height of
, at which point it basically becomes a linked list. For example,
containson a "spindly" BST would take linear time.
Both trees below have a height H = 3, yet the left tree is able to hold many more items than the left.