[Swift] 기초 예제 5 (딕셔너리)

//code1
var team = ["김윤","김찬","송성","윤영","정혜"]
for i in team {
    print("\(i)")
}


//code2
var team = ["김윤","김찬","송성","윤영","정혜"]
var nextTeam = ["이수","손윤","이제","박채","김하"]
var addTeam = team+nextTeam
for i in addTeam{
    print("\(i)")
}


//code3
var teams : [String:String] = [
     "김윤":"뉴진스",
     "김찬":"아이유",
     "송성":"윤성욱",
     "윤영":"10cm",
     "정혜":"장원영"
]


for (key,value) in teams{
    print("\(key):\(value)")
}

//code4

var teams : [String:String] = [
    "김윤":"뉴진스",
     "김찬":"아이유",
     "송성":"윤성욱",
     "윤영":"10cm",
     "정혜":"장원영"
]

var nextTeams : [String:String] = [
    "손윤":"빈지노",
    "이제":"아이유",
    "박채":"pH-1",
    "김하":"아이유"
]

teams.merge(nextTeams){ourTeamKey,_ in ourTeamKey} //기존 teams의 key가 유지됨

var newTeams = teams
for (key,value) in newTeams{
    print("\(key):\(value)")
}


//code5-1
 
 var teams : [String:String] = [
     "김윤":"뉴진스",
     "김찬":"아이유",
     "송성":"윤성욱",
     "윤영":"10cm",
     "정혜":"장원영"
 ]

 var nextTeams : [String:String] = [
     "손윤":"빈지노",
     "이제":"아이유",
     "박채":"pH-1",
     "김하":"아이유"
 ]

 teams.merge(nextTeams){i,_ in i}

var newTeams : [Int:String] = [:]

 var i=1
 for (key,value) in teams{
    newTeams.updateValue(value,forKey: i)
    i=i+1
 }
for (key,value) in newTeams {
   print("\(key):\(value)")
}


//code5-2

var ourTeamDict : [[String:String]] = [
    [
        "name" : "김찬",
        "favoriteSinger" : "아이유"
    ],
    [
        "name" : "김윤",
        "favoriteSinger" : "뉴진스"
    ],
    [
        "name" : "송성",
        "favoriteSinger" : "윤종신"
    ],
    [
        "name" : "윤영",
        "favoriteSinger" : "10cm"
    ],
    [
        "name" : "정혜",
        "favoriteSinger" : "장원영"
    ]
]

for i in ourTeamDict {
    for (key,value) in i {
        print("\(key):\(value)")
    }
    print()
}


//ex

var students: [String: String] = [
    "202300001": "홍길동",
    "202300008": "고길동",
    "200300012": "둘리"
]

print(students.count)

print(students["202300008"] ?? "(없음)")
print(students["202300009", default: "(진짜없음)"])

students["200300012"] = "마이콜"

print(students.count)
print(students)

students["200300032"] = "바요킹"

print(students.count)
print(students)

students["200300032"] = nil

print(students.count)
print(students)

for (number, name) in students {
    print("\(number) : \(name)")
}

*/