Arrays : Jewels and Stones (Java Solution)

You're given strings jewels representing the types of stones that are jewels, and stones representing the stones you have. Each character in stones is a type of stone you have. You want to know how many of the stones you have are also jewels.

Letters are case sensitive, so "a" is considered a different type of stone from "A".

Example 1 : Input : jewels = "aA", stones = "aAAbbbb" Output : 3

Example 2 : Input : jewels = "z", stones = "ZZ" Output : 0

Hey Avinash, please assign this issue to me and add a hactoberfest label.

@aditya-517 don't forget to add the same problem statement in the code file

@avinash201199 I have added complete problem statement with sample testcases & created a pull request #375 . Please review the PR & suggest changes if needed :)