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			46 lines
		
	
	
		
			1.3 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			46 lines
		
	
	
		
			1.3 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
| /**
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|  * File: hashing_search.js
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|  * Created Time: 2022-12-29
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|  * Author: Zhuo Qinyue (1403450829@qq.com)
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|  */
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| 
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| const { arrToLinkedList } = require('../modules/ListNode');
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| 
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| /* 哈希查找(数组) */
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| function hashingSearchArray(map, target) {
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|     // 哈希表的 key: 目标元素,value: 索引
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|     // 若哈希表中无此 key ,返回 -1
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|     return map.has(target) ? map.get(target) : -1;
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| }
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| 
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| /* 哈希查找(链表) */
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| function hashingSearchLinkedList(map, target) {
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|     // 哈希表的 key: 目标节点值,value: 节点对象
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|     // 若哈希表中无此 key ,返回 null
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|     return map.has(target) ? map.get(target) : null;
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| }
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| 
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| /* Driver Code */
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| const target = 3;
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| 
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| /* 哈希查找(数组) */
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| const nums = [1, 5, 3, 2, 4, 7, 5, 9, 10, 8];
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| // 初始化哈希表
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| const map = new Map();
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| for (let i = 0; i < nums.length; i++) {
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|     map.set(nums[i], i); // key: 元素,value: 索引
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| }
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| const index = hashingSearchArray(map, target);
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| console.log('目标元素 3 的索引 = ' + index);
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| 
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| /* 哈希查找(链表) */
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| let head = arrToLinkedList(nums);
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| // 初始化哈希表
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| const map1 = new Map();
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| while (head != null) {
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|     map1.set(head.val, head); // key: 节点值,value: 节点
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|     head = head.next;
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| }
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| const node = hashingSearchLinkedList(map1, target);
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| console.log('目标节点值 3 的对应节点对象为', node);
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