[swift] 62. Set Intersection

Set Intersection

• Set 간의 중복을 가져옴

let friendGroupA = ["철수", "영희", "멍멍", "야옹"]
let friendGroupB = ["철수", "영희", "짹짹", "우엉"]

let friendGroupASet = Set(friendGroupA)
let friendGroupBSet = Set(friendGroupB)

let totalFriend = friendGroupASet.intersection(friendGroupBSet)
//["철수", "영희"]