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                ??一站式輕松地調用各大LLM模型接口,支持GPT4、智譜、豆包、星火、月之暗面及文生圖、文生視頻 廣告
                You're given strings J representing the types of stones that are jewels, and S representing the stones you have. Each character in S is a type of stone you have. You want to know how many of the stones you have are also jewels. The letters in J are guaranteed distinct, and all characters in J and S are letters. Letters are case sensitive, so "a" is considered a different type of stone from "A". Example 1: ~~~ Input: J = "aA", S = "aAAbbbb" Output: 3 Example 2: Input: J = "z", S = "ZZ" Output: 0 ~~~ Note: S and J will consist of letters and have length at most 50. The characters in J are distinct. ~~~ var numJewelsInStones = function(J,S) { var result = 0; var jlen = J.length; var slen = S.length; for (var i = 0; i < slen; i++) { for (var j = 0; j < jlen; j++) { if (S[i] == J[j]) { result++; break; } } } return result; } ~~~
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