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Update hash_map docs

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danielsss 2022-12-26 17:15:20 +11:00
parent 305915270a
commit 528b716766
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1 changed files with 15 additions and 16 deletions
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23
docs/chapter_hashing/hash_map.md
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@ -512,9 +512,8 @@ $$
```typescript title="array_hash_map.ts"
/* 键值对 Number -> String */
class Entry {
public key: number;
public val: string;
public key: number;
public val: string;
constructor(key: number, val: string) {
this.key = key;
@ -525,7 +524,7 @@ $$
/* 基于数组简易实现的哈希表 */
class ArrayHashMap {
private readonly bucket: Entry | null[];
private readonly bucket: (Entry | null)[];
constructor() {
// 初始化一个长度为 100 的桶（数组）
@ -559,8 +558,8 @@ $$
}
/* 获取所有键值对 */
public entries(): Entry[] {
let arr = [];
public entries(): (Entry | null)[] {
let arr: (Entry | null)[] = [];
for (let i = 0; i < this.bucket.length; i++) {
if (this.bucket[i]) {
arr.push(this.bucket[i]);
@ -570,22 +569,22 @@ $$
}
/* 获取所有键 */
public keys(): number[] {
let arr = [];
public keys(): (number | undefined)[] {
let arr: (number | undefined)[] = [];
for (let i = 0; i < this.bucket.length; i++) {
if (this.bucket[i]) {
arr.push(this.bucket[i].key);
arr.push(this.bucket[i]?.key);
}
}
return arr;
}
/* 获取所有值 */
public values(): string[] {
let arr = [];
public values(): (string | undefined)[] {
let arr: (string | undefined)[] = [];
for (let i = 0; i < this.bucket.length; i++) {
if (this.bucket[i]) {
arr.push(this.bucket[i].val);
arr.push(this.bucket[i]?.val);
}
}
return arr;