Java TreeMap Exercises, Practice & Solutions

Java Collection: TreeMap Exercises [26 exercises with solution]

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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. Write a Java program to associate the specified value with the specified key in a Tree Map.
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2. Write a Java program to copy Tree Map's content to another Tree Map.
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3. Write a Java program to search for a key in a Tree Map.
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4. Write a Java program to search for a value in a Tree Map.
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5. Write a Java program to get all keys from a Tree Map.
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6. Write a Java program to delete all elements from a Tree Map.
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7. Write a Java program to sort keys in a Tree Map by using a comparator.
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8. 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. Write a Java program to get the first (lowest) key and the last (highest) key currently in a map.
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10. Write a Java program to get a reverse order view of the keys contained in a given map.
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11. 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. Write a Java program to get the greatest key less than or equal to the given key.
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13. 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. 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. 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. 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. 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. Write a Java program to get a NavigableSet view of keys in a map.
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19. 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. 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. 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. 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. 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. Write a Java program to get a portion of a map whose keys are greater than a given key.
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25. 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.
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26. 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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