skill trees

Author: co3oing

Programmers/스킬트리.swift

@@ -0,0 +1,15 @@
+import Foundation
+
+func solution(_ skill:String, _ skill_trees:[String]) -> Int {
+    var answer = 0
+    var skillSet = skill
+    
+    for trees in skill_trees {
+        let skillInTrees = trees.filter{skillSet.contains($0)}
+        if skillInTrees.first == skill.first && skill.contains(skillInTrees) || skillInTrees == "" {
+            answer += 1
+        }
+    }
+    
+    return answer
+}