TreeMap Data Structure in JAVA @Codimee

Hello guys hope you all understanding the program. Sorry for the background noise. Its the basic program for understanding the data structures.

NOTES:-

TreeMap:
1. A TreeMap in Java is a type of Map (a data structure that maps keys to values) that is implemented as a Red-Black tree.
2. This means that the entries in the map are sorted based on the keys, so the entries are stored in a specific order, which is determined by the natural ordering of the keys or by a custom comparator that you can provide.
3. It provides guaranteed log(n) time cost for the basic operations (get and put).

METHODS:-
1. put(K key, V value): It inserts the specified value with the specified key in the map.

2. entrySet(): This method returns a Set view of the key-value pairs in the map. Each element in the set is an instance of the Map.Entry interface.

3. firstKey(): This method returns the first (lowest) key in the map.

4. lastKey(): This method returns the last (highest) key in the map.

5. subMap(K fromKey, K toKey): This method returns a view of the portion of the map that contains the keys between fromKey and toKey, inclusive.

6. headMap(K toKey): This method returns a view of the portion of the map that contains the keys less than toKey.

7. tailMap(K fromKey): This method returns a view of the portion of the map that contains the keys greater than or equal to fromKey.

8. lastEntry(): method returns a Map.Entry object that represents the last (highest) key-value pair in the map, according to the sorting order of the keys.

9. firstEntry(): method is similar to the lastEntry method, but it returns the first (lowest) key-value pair in the map instead.

10. descendingMap(): this method returns a view of the map sorted in descending order. In other words, it returns a map that contains the same elements as the original map, but with the order of the elements reversed.

11. remove(Object key): This method removes the key-value pair associated with the given key from the map. If the key is not found in the map, the method does nothing.