mirror of
https://github.com/krahets/hello-algo.git
synced 2025-11-04 14:18:20 +08:00
fdbe275fc9
* fix: check the rust codes and fix it * Update binary_tree_bfs.rs --------- Co-authored-by: Yudong Jin <krahets@163.com>
50 lines
1.5 KiB
Rust
50 lines
1.5 KiB
Rust
/*
|
||
* File: hashing_search.rs
|
||
* Created Time: 2023-07-09
|
||
* Author: sjinzh (sjinzh@gmail.com)
|
||
*/
|
||
|
||
include!("../include/include.rs");
|
||
|
||
use std::collections::HashMap;
|
||
use std::rc::Rc;
|
||
use std::cell::RefCell;
|
||
use list_node::ListNode;
|
||
|
||
/* 哈希查找（数组） */
|
||
fn hashing_search_array<'a>(map: &'a HashMap<i32, usize>, target: i32) -> Option<&'a usize> {
|
||
// 哈希表的 key: 目标元素，value: 索引
|
||
// 若哈希表中无此 key ，返回 None
|
||
map.get(&target)
|
||
}
|
||
|
||
/* 哈希查找（链表） */
|
||
fn hashing_search_linked_list(map: &HashMap<i32, Rc<RefCell<ListNode<i32>>>>, target: i32) -> Option<&Rc<RefCell<ListNode<i32>>>> {
|
||
// 哈希表的 key: 目标节点值，value: 节点对象
|
||
// 若哈希表中无此 key ，返回 None
|
||
map.get(&target)
|
||
}
|
||
|
||
/* Driver Code */
|
||
pub fn main() {
|
||
let target = 3;
|
||
|
||
/* 哈希查找（数组） */
|
||
let nums = [ 1, 5, 3, 2, 4, 7, 5, 9, 10, 8 ];
|
||
// 初始化哈希表
|
||
let mut map = HashMap::new();
|
||
for (i, num) in nums.iter().enumerate() {
|
||
map.insert(*num, i); // key: 元素，value: 索引
|
||
}
|
||
let index = hashing_search_array(&map, target);
|
||
println!("目标元素 3 的索引 = {}", index.unwrap());
|
||
|
||
/* 哈希查找（链表） */
|
||
let head = ListNode::arr_to_linked_list(&nums);
|
||
// 初始化哈希表
|
||
// let mut map1 = HashMap::new();
|
||
let map1 = ListNode::linked_list_to_hashmap(head);
|
||
let node = hashing_search_linked_list(&map1, target);
|
||
println!("目标节点值 3 的对应节点对象为 {:?}", node);
|
||
}
|