Comparing Trees, Maps, and Sets

How do Trees, Maps, and Sets differ in these categories:

• Arranging elements (order)

• How data is stored

• Does it allow for duplicates

• Trees: Arrange elements in order, Sets & Maps: Don’t follow any order.

• Trees: Stored using nodes, Sets: Stores values only, Maps: Store key-value pairs.

• Trees: Allows duplicates, Sets & Maps: Don’t allow duplicates.

When would you want to use Sets, Trees, or Maps? Name one case where you’d want to use one over the others.

• Sets: Check if elements exist and track items.

• Trees: When you care about arranging elements in order.

• Maps: When you want to connect things using key + value pairs for lookup.

Arrange data structures from most fastest to slowest:

• HashSet + HashMap

• TreeSet + TreeMap

HashSets and HashMaps are generally faster than TreeSet and TreeMaps (hash-based is always faster than tree-based).

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