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1c8b7ef559
* Replace 结点 with 节点 Update the footnotes in the figures * Update mindmap * Reduce the size of the mindmap.png
45 lines
1.3 KiB
JavaScript
45 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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const { arrToLinkedList } = require("../modules/ListNode");
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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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/* 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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/* Driver Code */
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const target = 3;
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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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/* 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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