Java TreeMap Exercises, Practice & Solutions
This resource offers a total of 130 Java TreeMap problems for practice. It includes 26 main exercises, each accompanied by solutions, detailed explanations, and four related problems.
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TreeMap:
In Java, TreeMap is an implementation of the SortedMap interface provided by the Java Collections Framework. It's part of the java.util package.
1. Associate Value with Key in TreeMap
Write a Java program to associate the specified value with the specified key in a Tree Map.
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2. Copy TreeMap to Another TreeMap
Write a Java program to copy Tree Map's content to another Tree Map.
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3. Search Key in TreeMap
Write a Java program to search for a key in a Tree Map.
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4. Search Value in TreeMap
Write a Java program to search for a value in a Tree Map.
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5. Get All Keys from TreeMap
Write a Java program to get all keys from a Tree Map.
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6. Delete All Elements from TreeMap
Write a Java program to delete all elements from a Tree Map.
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7. Sort TreeMap Keys with Comparator
Write a Java program to sort keys in a Tree Map by using a comparator.
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8. Get Mapping with Greatest and Least Key
Write a Java program to get a key-value mapping associated with the greatest key and the least key in a map.
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9. Get First and Last Key in TreeMap
Write a Java program to get the first (lowest) key and the last (highest) key currently in a map.
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10. Get Reverse View of TreeMap Keys
Write a Java program to get a reverse order view of the keys contained in a given map.
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11. Get Mapping with Floor Key
Write a Java program to get a key-value mapping associated with the greatest key less than or equal to the given key.
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12. Get Floor Key in TreeMap
Write a Java program to get the greatest key less than or equal to the given key.
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13. Get Head Map with Keys Less Than Given Key
Write a Java program to get the portion of a map whose keys are strictly less than a given key.
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14. Get Head Map with Optional Inclusive Key
Write a Java program to get the portion of this map whose keys are less than (or equal to, if inclusive is true) a given key.
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15. Get Higher Key in TreeMap
Write a Java program to get the least key strictly greater than the given key. Return null if there is no such key.
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16. Get Mapping with Lower Key
Write a Java program to get a key-value mapping associated with the greatest key strictly less than the given key. Return null if there is no such key.
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17. Get Lower Key in TreeMap
Write a Java program to get the greatest key strictly less than the given key. Return null if there is no such key.
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18. Get NavigableSet View of Keys
Write a Java program to get a NavigableSet view of keys in a map.
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19. Poll First Entry from TreeMap
Write a Java program to remove and get a key-value mapping associated with the least key in a map.
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20. Poll Last Entry from TreeMap
Write a Java program to remove and get a key-value mapping associated with the greatest key in this map.
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21. Get SubMap from Key to Exclusive Key
Write a Java program to get the portion of a map whose keys range from a given key (inclusive) to another key (exclusive).
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22. Get SubMap from Key to Key
Write a Java program to get the portion of a map whose keys range from a given key to another key.
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23. Get TailMap from Inclusive Key
Write a Java program to get a portion of a map whose keys are greater than or equal to a given key.
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24. Get TailMap from Exclusive Key
Write a Java program to get a portion of a map whose keys are greater than a given key.
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25. Get Mapping with Ceiling Key
Write a Java program to get a key-value mapping associated with the least key greater than or equal to the given key. Return null if there is no such key.Click me to see the solution
26. Get Ceiling Key in TreeMap
Write a Java program to get the least key greater than or equal to the given key. Returns null if there is no such key.
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Do not submit any solution of the above exercises at here, if you want to contribute go to the appropriate exercise page.