# [Solved] 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.

## Question

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
```

Constraints:

• `1 <= jewels.length, stones.length <= 50`
• `jewels` and `stones` consist of only English letters.
• All the characters of `jewels` are unique.

## Python Solution

```class Solution:
def numJewelsInStones(self, J: str, S: str) -> int:
c=0
for i in S:
if i in J:
c+=1
return c```