Add build script for Swift.

docs/chapter_hashing/hash_map.md

@@ -572,55 +572,9 @@ $$
 === "Swift"
 
     ```swift title="array_hash_map.swift"
-    /* 键值对 int->String */
-    class Entry {
-        var key: Int
-        var val: String
-    
-        init(key: Int, val: String) {
-            self.key = key
-            self.val = val
-        }
-    }
-    
-    /* 基于数组简易实现的哈希表 */
-    class ArrayHashMap {
-        private var bucket: [Entry?] = []
-    
-        init() {
-            // 初始化一个长度为 100 的桶（数组）
-            for _ in 0 ..< 100 {
-                bucket.append(nil)
-            }
-        }
-    
-        /* 哈希函数 */
-        private func hashFunc(key: Int) -> Int {
-            let index = key % 100
-            return index
-        }
-    
-        /* 查询操作 */
-        func get(key: Int) -> String? {
-            let index = hashFunc(key: key)
-            let pair = bucket[index]
-            return pair?.val
-        }
-    
-        /* 添加操作 */
-        func put(key: Int, val: String) {
-            let pair = Entry(key: key, val: val)
-            let index = hashFunc(key: key)
-            bucket[index] = pair
-        }
-    
-        /* 删除操作 */
-        func remove(key: Int) {
-            let index = hashFunc(key: key)
-            // 置为 nil ，代表删除
-            bucket[index] = nil
-        }
-    }
+    [class]{Entry}-[func]{}
+
+    [class]{ArrayHashMap}-[func]{}
     ```
 
 === "Zig"