15.5.2.3 - TreeMap
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Practice Questions
Test your understanding with targeted questions
What is a TreeMap in Java?
💡 Hint: Consider its name. What does 'tree' and 'map' imply?
Can TreeMap have null keys?
💡 Hint: Think about how null might affect sorting.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What kind of data structure does TreeMap use?
💡 Hint: Think about how TreeMap keeps its elements sorted.
True or False: TreeMaps allow null keys.
💡 Hint: Recall the characteristics of TreeMap.
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Challenge Problems
Push your limits with advanced challenges
Create a TreeMap with several fruit names as keys and their corresponding prices as values. Write code to retrieve the price of a specific fruit and handle the case where the fruit does not exist.
💡 Hint: Consider how you check if a key exists in a map.
Given a list of student scores, use a TreeMap to sort the scores and display them alongside their student names. Write appropriate code to achieve this.
💡 Hint: Remember: the key is the score and the value is the student's name.
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