TreeMap in Java | Example Tutorial | Code Below

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Hello hello, everybody, today in this video I will talk about TreeMap in Java

TreeMap class implements a Map interface similar to the HashMap class. The main difference between them is that HashMap is an unordered collection while TreeMap is sorted in the ascending order of its keys. TreeMap contains only unique elements. Both TreeMap and HashMap don't support duplicate keys. If added, it overrides the previous element. HashMap allows storing at most one null key and many null values.
However, TreeMap doesn't allow a null key but may contain many null values.

More array based problems for practice
http://javarevisited.blogspot.sg/2014/11/how-to-find-missing-number-on-integer-array-java.html
http://javarevisited.blogspot.sg/2014/01/how-to-remove-duplicates-from-array-java-without-collection-API.html
http://java67.com/2014/11/how-to-test-if-array-contains-certain-value-in-java.html
http://java67.blogspot.sg/2014/02/how-to-find-largest-and-smallest-number-array-in-java.html
https://javarevisited.blogspot.com/2015/06/top-20-array-interview-questions-and-answers.html
https://medium.com/javarevisited/20-array-coding-problems-and-questions-from-programming-interviews-869b475b9121

I have also posted a GitHub link to the code.
https://github.com/LongLong2310/Javarevisited/blob/8bbb70ef5731ec1591525452287b35c000ae24e8/treeMap.java

Tags:
Java
Coding
TreeMap
HashMap

#java #coding #TreeMap #HashMapr #100DaysOfCode #Exercise #Java