soywu
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diff --git a/‎May-LeetCoding-Challenge/02-Jewels-And-Stones/Jewels-and-Stones.scala
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@@ -2,6 +2,7 @@
 .DS_Store
 .AppleDouble
 .LSOverride
+.idea
 
 # Icon must end with two \r
 Icon
 
@@ -0,0 +1,6 @@
+/**
+  * scala solution, not sure the fastest but surely the simplest
+  */
+object Solution {
+  def numJewelsInStones(J: String, S: String): Int = S.toSeq.count(J.contains(_))
+}