Merge pull request #187 from zhuoqinyue/master

补充js和ts对应的哈希查找
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Yudong Jin 2023-01-11 19:27:57 +08:00 committed by GitHub
commit 8f66b02d2b
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4 changed files with 131 additions and 9 deletions

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@ -0,0 +1,51 @@
/**
* File: hashing_search.js
* Created Time: 2022-12-29
* Author: Zhuo Qinyue (1403450829@qq.com)
*/
const PrintUtil = require("../include/PrintUtil");
const ListNode = require("../include/ListNode");
/* 哈希查找(数组) */
function hashingSearch(map, target) {
// 哈希表的 key: 目标元素value: 索引
// 若哈希表中无此 key ,返回 -1
return map.has(target) ? map.get(target) : -1;
}
/* 哈希查找(链表) */
function hashingSearch1(map, target) {
// 哈希表的 key: 目标结点值value: 结点对象
// 若哈希表中无此 key ,返回 null
return map.has(target) ? map.get(target) : null;
}
function main() {
const target = 3;
/* 哈希查找(数组) */
const nums = [1, 5, 3, 2, 4, 7, 5, 9, 10, 8];
// 初始化哈希表
const map = new Map();
for (let i = 0; i < nums.length; i++) {
map.set(nums[i], i); // key: 元素value: 索引
}
const index = hashingSearch(map, target);
console.log("目标元素 3 的索引 = " + index);
/* 哈希查找(链表) */
let head = new ListNode().arrToLinkedList(nums)
// 初始化哈希表
const map1 = new Map();
while (head != null) {
map1.set(head.val, head); // key: 结点值value: 结点
head = head.next;
}
const node = hashingSearch1(map1, target);
console.log("目标结点值 3 的对应结点对象为" );
PrintUtil.printLinkedList(node);
}
main();

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@ -0,0 +1,51 @@
/**
* File: hashing_search.js
* Created Time: 2022-12-29
* Author: Zhuo Qinyue (1403450829@qq.com)
*/
import { printLinkedList } from "../module/PrintUtil";
import ListNode from "../module/ListNode";
/* 哈希查找(数组) */
function hashingSearch(map: Map<number, number>, target: number): number {
// 哈希表的 key: 目标元素value: 索引
// 若哈希表中无此 key ,返回 -1
return map.has(target) ? map.get(target) as number : -1;
}
/* 哈希查找(链表) */
function hashingSearch1(map: Map<number, ListNode>, target: number): ListNode | null {
// 哈希表的 key: 目标结点值value: 结点对象
// 若哈希表中无此 key ,返回 null
return map.has(target) ? map.get(target) as ListNode : null;
}
function main() {
const target = 3;
/* 哈希查找(数组) */
const nums = [1, 5, 3, 2, 4, 7, 5, 9, 10, 8];
// 初始化哈希表
const map = new Map();
for (let i = 0; i < nums.length; i++) {
map.set(nums[i], i); // key: 元素value: 索引
}
const index = hashingSearch(map, target);
console.log("目标元素 3 的索引 = " + index);
/* 哈希查找(链表) */
let head = new ListNode().arrToLinkedList(nums)
// 初始化哈希表
const map1 = new Map();
while (head != null) {
map1.set(head.val, head); // key: 结点值value: 结点
head = head.next;
}
const node = hashingSearch1(map1, target);
console.log("目标结点值 3 的对应结点对象为");
printLinkedList(node);
}
main();

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@ -16,12 +16,12 @@ export default class ListNode {
} }
/** /**
* Generate a linked-list with an array * Generate a linked list with an array
* @param arr * @param arr
* @return ListNode * @return
*/ */
public static arrToLinkedList(arr: number[]): ListNode | null { arrToLinkedList(arr: number[]): ListNode | null {
const dum = new ListNode(0); const dum: ListNode = new ListNode(0);
let head = dum; let head = dum;
for (const val of arr) { for (const val of arr) {
head.next = new ListNode(val); head.next = new ListNode(val);

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@ -68,13 +68,23 @@ comments: true
=== "JavaScript" === "JavaScript"
```js title="hashing_search.js" ```js title="hashing_search.js"
/* 哈希查找(数组) */
function hashingSearch(map, target) {
// 哈希表的 key: 目标元素value: 索引
// 若哈希表中无此 key ,返回 -1
return map.has(target) ? map.get(target) : -1;
}
``` ```
=== "TypeScript" === "TypeScript"
```typescript title="hashing_search.ts" ```typescript title="hashing_search.ts"
/* 哈希查找(数组) */
function hashingSearch(map: Map<number, number>, target: number): number {
// 哈希表的 key: 目标元素value: 索引
// 若哈希表中无此 key ,返回 -1
return map.has(target) ? map.get(target) as number : -1;
}
``` ```
=== "C" === "C"
@ -157,13 +167,23 @@ comments: true
=== "JavaScript" === "JavaScript"
```js title="hashing_search.js" ```js title="hashing_search.js"
/* 哈希查找(链表) */
function hashingSearch1(map, target) {
// 哈希表的 key: 目标结点值value: 结点对象
// 若哈希表中无此 key ,返回 null
return map.has(target) ? map.get(target) : null;
}
``` ```
=== "TypeScript" === "TypeScript"
```typescript title="hashing_search.ts" ```typescript title="hashing_search.ts"
/* 哈希查找(链表) */
function hashingSearch1(map: Map<number, ListNode>, target: number): ListNode | null {
// 哈希表的 key: 目标结点值value: 结点对象
// 若哈希表中无此 key ,返回 null
return map.has(target) ? map.get(target) as ListNode : null;
}
``` ```
=== "C" === "C"