Update built-in Hash Map

docs/chapter_hashing/hash_map.md

@@ -139,16 +139,16 @@ comments: true
 
     ```typescript title="hash_map.ts"
     /* 初始化哈希表 */
-    const map = new ArrayHashMap();
+    const map = new Map<number, string>();
     /* 添加操作 */
     // 在哈希表中添加键值对 (key, value)
-    map.put(12836, '小哈');
-    map.put(15937, '小啰');
-    map.put(16750, '小算');
-    map.put(13276, '小法');
-    map.put(10583, '小鸭');
+    map.set(12836, '小哈');
+    map.set(15937, '小啰');
+    map.set(16750, '小算');
+    map.set(13276, '小法');
+    map.set(10583, '小鸭');
     console.info('\n添加完成后，哈希表为\nKey -> Value');
-    map.print();
+    console.info(map);
 
     /* 查询操作 */
     // 向哈希表输入键 key ，得到值 value
@@ -157,9 +157,9 @@ comments: true
 
     /* 删除操作 */
     // 在哈希表中删除键值对 (key, value)
-    map.remove(10583);
+    map.delete(10583);
     console.info('\n删除 10583 后，哈希表为\nKey -> Value');
-    map.print();
+    console.info(map);
     ```
 
 === "C"
@@ -256,16 +256,16 @@ comments: true
     ```typescript title="hash_map.ts"
     /* 遍历哈希表 */
     console.info('\n遍历键值对 Key->Value');
-    for (const entry of map.entrySet()) {
-      console.info(entry.key + ' -> ' + entry.val);
+    for (const [k, v] of map.entries()) {
+        console.info(k + ' -> ' + v);
     }
     console.info('\n单独遍历键 Key');
-    for (const key of map.keySet()) {
-      console.info(key);
+    for (const k of map.keys()) {
+        console.info(k);
     }
     console.info('\n单独遍历值 Value');
-    for (const val of map.valueSet()) {
-      console.info(val);
+    for (const v of map.values()) {
+        console.info(v);
     }
     ```
 
@@ -525,11 +525,11 @@ $$
     /* 基于数组简易实现的哈希表 */
     class ArrayHashMap {
 
-        private readonly bucket: Entry[];
+        private readonly bucket: Entry | null[];
 
         constructor() {
             // 初始化一个长度为 100 的桶（数组）
-            this.bucket = (new Array(100)).fill(null as any);
+            this.bucket = (new Array(100)).fill(null);
         }
     
         /* 哈希函数 */
@@ -546,20 +546,20 @@ $$
         }
     
         /* 添加操作 */
-        public put(key: number, val: string) {
+        public set(key: number, val: string) {
             let index = this.hashFunc(key);
             this.bucket[index] = new Entry(index, val);
         }
     
         /* 删除操作 */
-        public remove(key: number) {
+        public delete(key: number) {
             let index = this.hashFunc(key);
             // 置为 null ，代表删除
-            this.bucket[index] = null as any;
+            this.bucket[index] = null;
         }
     
         /* 获取所有键值对 */
-        public entrySet(): Entry[] {
+        public entries(): Entry[] {
             let arr = [];
             for (let i = 0; i < this.bucket.length; i++) {
                 if (this.bucket[i]) {
@@ -570,7 +570,7 @@ $$
         }
     
         /* 获取所有键 */
-        public keySet(): number[] {
+        public keys(): number[] {
             let arr = [];
             for (let i = 0; i < this.bucket.length; i++) {
                 if (this.bucket[i]) {
@@ -581,7 +581,7 @@ $$
         }
     
         /* 获取所有值 */
-        public valueSet(): string[] {
+        public values(): string[] {
             let arr = [];
             for (let i = 0; i < this.bucket.length; i++) {
                 if (this.bucket[i]) {