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- func numJewelsInStones(_ J: String, _ S: String) -> Int {
- let jewels = Set(J)
- var count = 0
- for stone in S {
- if jewels.contains(stone) {
- count += 1
- }
- }
- return count
- }
- let num = numJewelsInStones("aA", "aAAbbbb")
- print(num)
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