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krahets
2024-03-18 03:11:07 +08:00
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commit 54c7448946
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21
docs-en/chapter_hashing/hash_map.md
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@ -1343,13 +1343,15 @@ The following code implements a simple hash table. Here, we encapsulate `key` an
/* 基于数组实现的哈希表 */
pub struct ArrayHashMap {
buckets: Vec<Option<Pair>>
buckets: Vec<Option<Pair>>,
}
impl ArrayHashMap {
pub fn new() -> ArrayHashMap {
// 初始化数组，包含 100 个桶
Self { buckets: vec![None; 100] }
Self {
buckets: vec![None; 100],
}
}
/* 哈希函数 */
@ -1381,17 +1383,26 @@ The following code implements a simple hash table. Here, we encapsulate `key` an
/* 获取所有键值对 */
pub fn entry_set(&self) -> Vec<&Pair> {
self.buckets.iter().filter_map(|pair| pair.as_ref()).collect()
self.buckets
.iter()
.filter_map(|pair| pair.as_ref())
.collect()
}
/* 获取所有键 */
pub fn key_set(&self) -> Vec<&i32> {
self.buckets.iter().filter_map(|pair| pair.as_ref().map(|pair| &pair.key)).collect()
self.buckets
.iter()
.filter_map(|pair| pair.as_ref().map(|pair| &pair.key))
.collect()
}
/* 获取所有值 */
pub fn value_set(&self) -> Vec<&String> {
self.buckets.iter().filter_map(|pair| pair.as_ref().map(|pair| &pair.val)).collect()
self.buckets
.iter()
.filter_map(|pair| pair.as_ref().map(|pair| &pair.val))
.collect()
}
/* 打印哈希表 */