Find frequency of every element in an array | Java coding practice question | Hashmaps

Find frequency of every element in an array.
I have discussed boththe approaches here, brute force and the hash map approach.
If you want to skip to particular chapter, I am mentioning the chapters below.

Chapters:

0:00 Understanding the problem
2:27 Brute force
7:29 Time and Space Complexity of Brute force solution
8:14 Code and run the brute force
9:15 Hashmap approach
12:35 Time and Space Complexity of Hashmap approach
13:25 Code and run the hashmap approach

[omkarrasalc]

Nice explanation.. Keep up the good work!