diff --git a/Tutorial/Tutorial.playground/Contents.swift b/Tutorial/Tutorial.playground/Contents.swift
index 9b0d9f6..cf78396 100644
--- a/Tutorial/Tutorial.playground/Contents.swift
+++ b/Tutorial/Tutorial.playground/Contents.swift
@@ -10,6 +10,12 @@ import Foundation
     ...
  ]
  */
+struct Cham: Codable {
+    var key: String
+    var name: String
+    var tags: [String]
+}
+
 let champsFilePath = Bundle.main.path(forResource: "champs", ofType: "json")
 
 /*
@@ -27,6 +33,25 @@ let selectedIndexesData = FileManager.default.contents(atPath: selectedIndexesFi
 let champs = try JSONSerialization.jsonObject(with: champsData!, options: [])
 let selectedIndexes = try JSONSerialization.jsonObject(with: selectedIndexesData!, options: [])
 
-// TODO: selectedIndexes는 챔피언 목록(champs)의 key 번호 들이다. selectedIndexes에 명시된 순서대로 챔피언들의 이름(name)을 나열하라
-let names: [String] = []
-print(names)
+//if let champs = champs as? [[String: Any]], let selectedIndexes = selectedIndexes as? [Int] {
+//
+//    let result = selectedIndexes.map { (index) -> [String] in
+//        champs.filter { (dict) -> Bool in
+//            return (dict["key"] as? String)?.elementsEqual("\(index)") ?? false
+//        }.map({ cham in (cham["name"] as? String ?? "") })
+//    }
+//    print(result)
+//}
+
+let decoder = JSONDecoder()
+if let champsData = champsData,
+    let champsResponse = try? decoder.decode([Cham].self, from: champsData),
+    let selectedIndexes = selectedIndexes as? [Int] {
+
+    let name = selectedIndexes.compactMap({ "\($0)" })
+        .flatMap { (index) -> [Cham] in champsResponse.filter({ $0.key.elementsEqual(index) }) }
+        .map({ $0.name })
+
+    print(name)
+
+}