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

Update array_hash_map

Browse Source
This commit is contained in:
krahets
2023-03-15 03:11:43 +08:00
parent 669388128f
commit d5afd93571
10 changed files with 98 additions and 98 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
codes/rust/chapter_hashing/array_hash_map.rs
View File

@ -12,12 +12,12 @@ pub struct Entry {
}
/* 基于数组简易实现的哈希表 */
pub struct ArrayHashMap { bucket: Vec<Option<Entry>> }
pub struct ArrayHashMap { buckets: Vec<Option<Entry>> }
impl ArrayHashMap {
pub fn new() -> ArrayHashMap {
// 初始化一个长度为 100 的桶（数组）
Self { bucket: vec![None; 100] }
Self { buckets: vec![None; 100] }
}
/* 哈希函数 */
@ -28,13 +28,13 @@ impl ArrayHashMap {
/* 查询操作 */
pub fn get(&self, key: i32) -> Option<&String> {
let index = self.hash_func(key);
self.bucket[index].as_ref().map(|entry| &entry.val)
self.buckets[index].as_ref().map(|entry| &entry.val)
}
/* 添加操作 */
pub fn put(&mut self, key: i32, val: &str) {
let index = self.hash_func(key);
self.bucket[index] = Some(Entry {
self.buckets[index] = Some(Entry {
key,
val: val.to_string(),
});
@ -43,22 +43,22 @@ impl ArrayHashMap {
/* 删除操作 */
pub fn remove(&mut self, key: i32) {
let index = self.hash_func(key);
self.bucket[index] = None;
self.buckets[index] = None;
}
/* 获取所有键值对 */
pub fn entry_set(&self) -> Vec<&Entry> {
self.bucket.iter().filter_map(|entry| entry.as_ref()).collect()
self.buckets.iter().filter_map(|entry| entry.as_ref()).collect()
}
/* 获取所有键 */
pub fn key_set(&self) -> Vec<&i32> {
self.bucket.iter().filter_map(|entry| entry.as_ref().map(|entry| &entry.key)).collect()
self.buckets.iter().filter_map(|entry| entry.as_ref().map(|entry| &entry.key)).collect()
}
/* 获取所有值 */
pub fn value_set(&self) -> Vec<&String> {
self.bucket.iter().filter_map(|entry| entry.as_ref().map(|entry| &entry.val)).collect()
self.buckets.iter().filter_map(|entry| entry.as_ref().map(|entry| &entry.val)).collect()
}
/* 打印哈希表 */