mirror of
				https://github.com/krahets/hello-algo.git
				synced 2025-10-31 18:37:48 +08:00 
			
		
		
		
	
		
			
				
	
	
		
			49 lines
		
	
	
		
			1.3 KiB
		
	
	
	
		
			Rust
		
	
	
	
	
	
			
		
		
	
	
			49 lines
		
	
	
		
			1.3 KiB
		
	
	
	
		
			Rust
		
	
	
	
	
	
| /*
 | |
|  * File: hash_map.rs
 | |
|  * Created Time: 2023-02-05
 | |
|  * Author: codingonion (coderonion@gmail.com)
 | |
|  */
 | |
| 
 | |
| use hello_algo_rust::include::print_util;
 | |
| 
 | |
| use std::collections::HashMap;
 | |
| 
 | |
| /* Driver Code */
 | |
| pub fn main() {
 | |
|     // 初始化哈希表
 | |
|     let mut map = HashMap::new();
 | |
| 
 | |
|     // 添加操作
 | |
|     // 在哈希表中添加键值对 (key, value)
 | |
|     map.insert(12836, "小哈");
 | |
|     map.insert(15937, "小啰");
 | |
|     map.insert(16750, "小算");
 | |
|     map.insert(13276, "小法");
 | |
|     map.insert(10583, "小鸭");
 | |
|     println!("\n添加完成后,哈希表为\nKey -> Value");
 | |
|     print_util::print_hash_map(&map);
 | |
| 
 | |
|     // 查询操作
 | |
|     // 向哈希表中输入键 key ,得到值 value
 | |
|     let name = map.get(&15937).copied().unwrap();
 | |
|     println!("\n输入学号 15937 ,查询到姓名 {name}");
 | |
| 
 | |
|     // 删除操作
 | |
|     // 在哈希表中删除键值对 (key, value)
 | |
|     _ = map.remove(&10583);
 | |
|     println!("\n删除 10583 后,哈希表为\nKey -> Value");
 | |
|     print_util::print_hash_map(&map);
 | |
| 
 | |
|     // 遍历哈希表
 | |
|     println!("\n遍历键值对 Key->Value");
 | |
|     print_util::print_hash_map(&map);
 | |
|     println!("\n单独遍历键 Key");
 | |
|     for key in map.keys() {
 | |
|         println!("{key}");
 | |
|     }
 | |
|     println!("\n单独遍历值 value");
 | |
|     for value in map.values() {
 | |
|         println!("{value}");
 | |
|     }
 | |
| }
 | 
