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3 cards from this section. Quick, good the night before a test.
What method of TreeMap retrieves the least entry greater than or equal to a specified key?
Look for a method that provides the next highest entry.
Which map implementation maintains the order of insertion?
Think about what type of access you would prefer with order.
Which of the following methods is provided by NavigableMap?
Think about methods that relate to order.
True or False: TreeMap allows null keys.
Consider what would happen if two entries have undefined order.
You are maintaining a contact list using a TreeMap that requires quick retrieval of nearest contacts starting with a certain letter. Write code to demonstrate how you'd achieve that.
What function can help retrieve contacts starting with a particular letter efficiently?
Compare the efficiency of inserting 10,000 entries into a HashMap versus a TreeMap. Discuss the outcomes.
Consider how the underlying structure impacts entry times.
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