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
Input: jewels = "aA", stones = "aAAbbbb" Output: 3
Input: jewels = "z", stones = "ZZ" Output: 0
1 <= jewels.length, stones.length <= 50
stonesconsist of only English letters.
- All the characters of
Solution in Python
class Solution: def numJewelsInStones(self, jewels: str, stones: str) -> int: return sum(1 for i in stones if i in set(jewels))