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g0701_0800.s0771_jewels_and_stones.readme.md Maven / Gradle / Ivy

771\. Jewels and Stones

Easy

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**.