Add space_complexit under C and fix memory leak under CPP (#456)

* fix(codes/cpp): Memory leak fix: the space was not freed when pop removed the element.

* fix(codes/cpp): Fix access error when printArray(arr, 0)

* fix(codes/cpp): Fix memory leaks: replace pointers with local variables, no need to manage memory

* fix(codes/cpp): Fix memory leaks: no delete

* fix(codes/cpp): Fix memory leaks: Add destructor ~ArrayHashMap()

* Update PrintUtil.hpp

* feat(codes/c): Add three-party hash implementation

* feat(codes/c): Add freeMemoryTree in tree_node.h

* feat(codes/c): Add space_complexity.c

* styles(codes/c): Modify format

* feat(codes/cpp): Undo a previous delete, there is no memory leak here

* Update array_hash_map.cpp

* Update include.h

---------

Co-authored-by: Yudong Jin <krahets@163.com>

codes/cpp/chapter_hashing/array_hash_map.cpp

@@ -28,6 +28,14 @@ class ArrayHashMap {
         buckets = vector<Entry *>(100);
     }
 
+    ~ArrayHashMap() {
+        // 释放内存
+        for (const auto &bucket : buckets) {
+            delete bucket;
+        }
+        buckets.clear();
+    }
+
     /* 哈希函数 */
     int hashFunc(int key) {
         int index = key % 100;
@@ -53,7 +61,8 @@ class ArrayHashMap {
     /* 删除操作 */
     void remove(int key) {
         int index = hashFunc(key);
-        // 置为 nullptr ，代表删除
+        // 释放内存并置为 nullptr
+        delete buckets[index];
         buckets[index] = nullptr;
     }
 
@@ -141,4 +150,4 @@ int main() {
     }
 
     return 0;
-}
+}