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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. |
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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". |
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Example 1: |
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Input: J = "aA", S = "aAAbbbb" |
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Output: 3 |
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Example 2: |
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Input: J = "z", S = "ZZ" |
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Output: 0 |
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Note: |
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S and J will consist of letters and have length at most 50. |
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The characters in J are distinct. |
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