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* [SS-004] HashMap초기 구현 * [SS-004] 정렬리스트 추출 구현 * [SS-004] HashMap 삽입삭제 구현 * [SS-004] testASCAndDESCList * [SS-004] ASC, DESC 최적화 리스트크기를 지정하여 최적화 * [SS-004] HashMap에 적용 * [SS-004] HashMap멀티쓰레드 환경 테스트 코드 추가 * [SS-004] Docs, HashMap Readme작성
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| // | ||
| // HashMap.swift | ||
| // SwiftStructures | ||
| // | ||
| // Created by choijunios on 10/13/24. | ||
| // | ||
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| import Foundation | ||
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| /// Thread safe hash map | ||
| public class HashMap<Key, Value> where Key: Hashable & Comparable { | ||
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| typealias KeyStore = RBTree<Key> | ||
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| private var dictionary: [Key: Value] = .init() | ||
| private let keyStore: KeyStore = .init() | ||
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| private let lock: NSLock = .init() | ||
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| public subscript(key: Key) -> Value? { | ||
| get { | ||
| defer { | ||
| lock.unlock() | ||
| } | ||
| lock.lock() | ||
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| return dictionary[key] | ||
| } | ||
| set(newValue) { | ||
| defer { | ||
| lock.unlock() | ||
| } | ||
| lock.lock() | ||
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| if dictionary[key] == nil { | ||
| // key isn't exists in dictionary | ||
| try! keyStore.append(key) | ||
| } | ||
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| dictionary[key] = newValue | ||
| } | ||
| } | ||
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| public func remove(_ key: Key) { | ||
| defer { | ||
| lock.unlock() | ||
| } | ||
| lock.lock() | ||
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| do { | ||
| try keyStore.remove(key) | ||
| } catch { | ||
| print("\(HashMap.self): " + error.localizedDescription) | ||
| } | ||
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| dictionary.removeValue(forKey: key) | ||
| } | ||
| } | ||
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| // MARK: sorted value list | ||
| public extension HashMap { | ||
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| func ascendingValues(_ count: Int) -> [Value] { | ||
| defer { | ||
| lock.unlock() | ||
| } | ||
| lock.lock() | ||
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| let pairCount = dictionary.count | ||
| let keyCount = count > pairCount ? pairCount : count | ||
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| let keys = keyStore.sortedList(type: .ASC, count: keyCount) | ||
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| return keys.compactMap { key in | ||
| dictionary[key] | ||
| } | ||
| } | ||
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| func descendingValues(_ count: Int) -> [Value] { | ||
| defer { | ||
| lock.unlock() | ||
| } | ||
| lock.lock() | ||
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| let pairCount = dictionary.count | ||
| let keyCount = count > pairCount ? pairCount : count | ||
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| let keys = keyStore.sortedList(type: .DESC, count: keyCount) | ||
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| return keys.compactMap { key in | ||
| dictionary[key] | ||
| } | ||
| } | ||
| } |
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