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d #33

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24 changes: 23 additions & 1 deletion Tutorial/Tutorial.playground/Contents.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -28,5 +28,27 @@ 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] = []
var names: [String] = []

var champsDictArr = champs as! [[String:Any]]
let selectedIndexesIntArr: [Int] = selectedIndexes as! [Int]
let selectedIndexesStringArr: [String] = selectedIndexesIntArr.map { "\($0)" }

for champDict in champsDictArr {
let champKey = champDict["key"] as! String
print(champKey)
if selectedIndexesStringArr.contains(champKey) {
names.append(champDict["name"] as! String)
}
}

print(names)
names = []

(champs as! [[String:Any]]).filter { (selectedIndexes as! [Int]).map { "\($0)" }.contains($0["key"] as! String) }
.forEach { names.append($0["name"] as! String) }

print(names)

// forEach, filter, first/last(where:), reduce
// map, flatMap, compactMap