algorithm/hello-algo
1
0
Fork 0
mirror of https://github.com/krahets/hello-algo.git synced 2025-11-02 12:58:42 +08:00
Code Issues Packages Projects Releases Wiki Activity

Add the codes of hashmap (#553)

Browse Source 
of chaining and open addressing
This commit is contained in:
Yudong Jin
2023-06-14 02:01:06 +08:00
committed by GitHub
parent d3e597af94
commit 9563965a20
27 changed files with 1280 additions and 207 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
codes/swift/chapter_hashing/array_hash_map.swift
View File

@ -4,8 +4,8 @@
* Author: nuomi1 (nuomi1@qq.com)
*/
/* 键值对 int->String */
class Entry {
/* 键值对 */
class Pair {
var key: Int
var val: String
@ -17,7 +17,7 @@ class Entry {
/* 基于数组简易实现的哈希表 */
class ArrayHashMap {
private var buckets: [Entry?] = []
private var buckets: [Pair?] = []
init() {
// 初始化数组，包含 100 个桶
@ -41,7 +41,7 @@ class ArrayHashMap {
/* 添加操作 */
func put(key: Int, val: String) {
let pair = Entry(key: key, val: val)
let pair = Pair(key: key, val: val)
let index = hashFunc(key: key)
buckets[index] = pair
}
@ -54,14 +54,14 @@ class ArrayHashMap {
}
/* 获取所有键值对 */
func entrySet() -> [Entry] {
var entrySet: [Entry] = []
func pairSet() -> [Pair] {
var pairSet: [Pair] = []
for pair in buckets {
if let pair = pair {
entrySet.append(pair)
pairSet.append(pair)
}
}
return entrySet
return pairSet
}
/* 获取所有键 */
@ -88,8 +88,8 @@ class ArrayHashMap {
/* 打印哈希表 */
func print() {
for entry in entrySet() {
Swift.print("\(entry.key) -> \(entry.val)")
for pair in pairSet() {
Swift.print("\(pair.key) -> \(pair.val)")
}
}
}
@ -124,8 +124,8 @@ enum _ArrayHashMap {
/* 遍历哈希表 */
print("\n遍历键值对 Key->Value")
for entry in map.entrySet() {
print("\(entry.key) -> \(entry.val)")
for pair in map.pairSet() {
print("\(pair.key) -> \(pair.val)")
}
print("\n单独遍历键 Key")
for key in map.keySet() {