C语言-手写有序Map(数组+链表+红黑树+有序遍历)(全功能)

矫情吗；* 2023-10-02 20:53 4阅读 0赞

### 原理图 ###

![在这里插入图片描述][3a1c8809f6804a618f18ed653e2e70cc.png]

通过维护一条链表，解决了 HashMap 不能随时保持遍历顺序和插入顺序一致的问题。根据经验而言单向链表足以无须双向链表,绝大部分场景根本不需要反向查询,所以我们只需要能保证,按照插入的顺序进行迭代即可

### 要求 ###

自己需要准备一套HashMap的数据结构(数组+链表+红黑树) ,没有的可以自己在我博客里学习 ,当然(数组+链表的HashMap也可以)

### 代码 ###

#ifndef STUDY_CHARLINKEDHASHMAP_H
    #define STUDY_CHARLINKEDHASHMAP_H
    #include "charkvlinked.h"
    #include "charhashmap.h"
    typedef  struct charLinkedHashMap{
        
        CharHashMap *charHashMap;
        struct CharKvLinked *charKvLinked; //单向链表,来维护hash插入的顺序,主要是为了能按照顺序迭代元素
    } CharLinkedHashMap;
    
    CharLinkedHashMap *createCharLinkedHashMap(int size);
    void putCharLinkedHashMap(CharLinkedHashMap *charLinkedHash, char *key, void *value);
    void *getCharLinkedHashMap(CharLinkedHashMap *charLinkedHash, char *key);
    void removeCharLinkedHashMap(CharLinkedHashMap *charLinkedHash, char *key);
    void updateCharLinkedHashMap(CharLinkedHashMap *charLinkedHash, char *key, void *value);
    int sizeCharLinkedHashMap(CharLinkedHashMap *charLinkedHash);
    boolean containsKeyCharLinkedHashMap(CharLinkedHashMap *charLinkedHash, char *key);
    
    
    // 迭代器结构
    typedef struct charLinkedHashIterator {
        
        CharKvLinkedIterator *charKvLinkedIterator;    // 链表的迭代器
    } CharLinkedHashIterator;
    // 创建哈希结构迭代器
    CharLinkedHashIterator *createCharLinkedHashMapIterator(CharLinkedHashMap *charLinkedHash);
    // 迭代器是否有下一个
    boolean hasNextCharLinkedHashMapIterator(CharLinkedHashIterator *iterator) ;
    // 迭代到下一次
    CharKvLinkedNode *nextCharLinkedHashMapIterator(CharLinkedHashIterator *iterator);
    
    CharLinkedHashMap *copyCharLinkedHashMap(CharLinkedHashMap *charLinkedHash);
    
    void mergeCharLinkedHashMap(CharLinkedHashMap *charLinkedHash1, CharLinkedHashMap *charLinkedHash2);
    
    CharLinkedHashMap *mergeCharLinkedHashMapNewMap(CharLinkedHashMap *linkedHashMap1, CharLinkedHashMap *linkedHashMap12);
    
    CharLinkedHashMap *differenceCharLinkedHashMap(CharLinkedHashMap *linkedHashMap1, CharLinkedHashMap *linkedHashMap2);
    
    CharLinkedHashMap *intersectionCharLinkedHashMap(CharLinkedHashMap *linkedHashMap1, CharLinkedHashMap *linkedHashMap2);
    
    CharLinkedHashMap *complementCharLinkedHashMap(CharLinkedHashMap *linkedHashMap1, CharLinkedHashMap *linkedHashMap2);
    
    CharLinkedHashMap *unionCharLinkedHashMap(CharLinkedHashMap *linkedHashMap1, CharLinkedHashMap *linkedHashMap2);
    
    void clearCharLinkedHashMap(CharLinkedHashMap *linkedHashMap);
    
    
    #endif //STUDY_CHARLINKEDHASHMAP_H

#include "charlinkedhashmap.h"
    #include <stdlib.h>
    
    //创建一个map
    CharLinkedHashMap *createCharLinkedHashMap(int size) {
        
        CharLinkedHashMap *charLinkedHash = (CharLinkedHashMap *) malloc(sizeof(CharLinkedHashMap));
        charLinkedHash->charHashMap = createCharHashMap(size);
        charLinkedHash->charKvLinked = createCharKvLinked();
        return charLinkedHash;
    }
    //添加一个元素
    void putCharLinkedHashMap(CharLinkedHashMap *charLinkedHash, char *key, void *value) {
        
        putCharHashMap(charLinkedHash->charHashMap, key, value);
        insertCharKvLinkedEndNode(charLinkedHash->charKvLinked, createCharKvLinkedNode(key, value));
    }
    
    //获取一个元素
    void *getCharLinkedHashMap(CharLinkedHashMap *charLinkedHash, char *key) {
        
        return getCharHashMap(charLinkedHash->charHashMap, key);
    }
    //删除一个元素
    void removeCharLinkedHashMap(CharLinkedHashMap *charLinkedHash, char *key) {
        
        removeCharHashMap(charLinkedHash->charHashMap, key);
        delCharKvLinkedNode(charLinkedHash->charKvLinked, key);
    }
    //更新一个元素
    void updateCharLinkedHashMap(CharLinkedHashMap *charLinkedHash, char *key, void *value) {
        
        updateCharHashMap(charLinkedHash->charHashMap, key, value);
        updateCharKvLinkedNode(charLinkedHash->charKvLinked, key, value);
    }
    
    //获取map的大小
    int sizeCharLinkedHashMap(CharLinkedHashMap *charLinkedHash) {
        
        return sizeCharHashMap(charLinkedHash->charHashMap);
    }
    //判断是否包含key
    boolean containsKeyCharLinkedHashMap(CharLinkedHashMap *charLinkedHash, char *key) {
        
        return containsKeyCharHashMap(charLinkedHash->charHashMap, key);
    }
    
    
    //创建一个迭代器
    CharLinkedHashIterator *createCharLinkedHashMapIterator(CharLinkedHashMap *charLinkedHash) {
        
        CharLinkedHashIterator *charLinkedHashIterator = (CharLinkedHashIterator *) malloc(sizeof(CharLinkedHashIterator));
        CharKvLinkedIterator *pIterator = createCharKvLinkedIterator(charLinkedHash->charKvLinked);
        charLinkedHashIterator->charKvLinkedIterator = pIterator;
        return charLinkedHashIterator;
    }
    //迭代器是否有下一个
    boolean hasNextCharLinkedHashMapIterator(CharLinkedHashIterator *iterator) {
        
        return hasNextCharKvLinkedIterator(iterator->charKvLinkedIterator);
    }
    //迭代到下一次
    CharKvLinkedNode *nextCharLinkedHashMapIterator(CharLinkedHashIterator *iterator) {
        
        return nextCharKvLinkedIterator(iterator->charKvLinkedIterator);
    }
    
    //复制一个map
    CharLinkedHashMap *copyCharLinkedHashMap(CharLinkedHashMap *charLinkedHash) {
        
        CharLinkedHashMap *copyCharLinkedHash = createCharLinkedHashMap(charLinkedHash->charHashMap->size);
        CharKvLinkedNode *pNode = charLinkedHash->charKvLinked->head;
        while (pNode != NULL) {
        
            putCharLinkedHashMap(copyCharLinkedHash, pNode->key, pNode->value);
            pNode = pNode->next;
        }
        return copyCharLinkedHash;
    }
    //将一个map集合,合并到另一个map集合里  charLinkedHash2合并到charLinkedHash1
    void mergeCharLinkedHashMap(CharLinkedHashMap *charLinkedHash1, CharLinkedHashMap *charLinkedHash2) {
        
        CharKvLinkedNode *pNode = charLinkedHash2->charKvLinked->head;
        while (pNode != NULL) {
        
            putCharLinkedHashMap(charLinkedHash1, pNode->key, pNode->value);
            pNode = pNode->next;
        }
    }
    //合并两个Map集合,返回一个新的Map集合
    CharLinkedHashMap *mergeCharLinkedHashMapNewMap(CharLinkedHashMap *linkedHashMap1, CharLinkedHashMap *linkedHashMap12) {
        
        CharLinkedHashMap *pHashMap = createCharLinkedHashMap(sizeCharLinkedHashMap(linkedHashMap1) + sizeCharLinkedHashMap(linkedHashMap12) );
        CharLinkedHashIterator *pIterator1 = createCharLinkedHashMapIterator(linkedHashMap1);
        while (hasNextCharLinkedHashMapIterator(pIterator1)) {
        
            CharKvLinkedNode *entry = nextCharLinkedHashMapIterator(pIterator1);
            putCharLinkedHashMap(pHashMap, entry->key, entry->value);
        }
        CharLinkedHashIterator *pIterator2 = createCharLinkedHashMapIterator(linkedHashMap12);
        while (hasNextCharLinkedHashMapIterator(pIterator2)) {
        
            CharKvLinkedNode *entry = nextCharLinkedHashMapIterator(pIterator2);
            putCharLinkedHashMap(pHashMap, entry->key, entry->value);
        }
        return pHashMap;
    }
    //差集,返回一个新的Map集合,返回hashMap2的差集
    CharLinkedHashMap *differenceCharLinkedHashMap(CharLinkedHashMap *linkedHashMap1, CharLinkedHashMap *linkedHashMap2) {
        
        CharLinkedHashMap *pHashMap = createCharLinkedHashMap(sizeCharLinkedHashMap(linkedHashMap1) );
        CharLinkedHashIterator *pIterator1 = createCharLinkedHashMapIterator(linkedHashMap1);
        while (hasNextCharLinkedHashMapIterator(pIterator1)) {
        
            CharKvLinkedNode *entry = nextCharLinkedHashMapIterator(pIterator1);
            if (!containsKeyCharLinkedHashMap(linkedHashMap2, entry->key)) {
        
                putCharLinkedHashMap(pHashMap, entry->key, entry->value);
            }
        }
        return pHashMap;
    }
    //交集,返回一个新的Map集合
    CharLinkedHashMap *intersectionCharLinkedHashMap(CharLinkedHashMap *linkedHashMap1, CharLinkedHashMap *linkedHashMap2) {
        
        CharLinkedHashMap *pHashMap = createCharLinkedHashMap(sizeCharLinkedHashMap(linkedHashMap1) );
        CharLinkedHashIterator *pIterator1 = createCharLinkedHashMapIterator(linkedHashMap1);
        while (hasNextCharLinkedHashMapIterator(pIterator1)) {
        
            CharKvLinkedNode *entry = nextCharLinkedHashMapIterator(pIterator1);
            if (containsKeyCharLinkedHashMap(linkedHashMap2, entry->key)) {
        
                putCharLinkedHashMap(pHashMap, entry->key, entry->value);
            }
        }
        return pHashMap;
    }
    
    //补集,返回一个新的Map集合
    CharLinkedHashMap *complementCharLinkedHashMap(CharLinkedHashMap *linkedHashMap1, CharLinkedHashMap *linkedHashMap2) {
        
        CharLinkedHashMap *pHashMap = createCharLinkedHashMap(sizeCharLinkedHashMap(linkedHashMap1) );
        CharLinkedHashIterator *pIterator1 = createCharLinkedHashMapIterator(linkedHashMap1);
        while (hasNextCharLinkedHashMapIterator(pIterator1)) {
        
            CharKvLinkedNode *entry = nextCharLinkedHashMapIterator(pIterator1);
            if (!containsKeyCharLinkedHashMap(linkedHashMap2, entry->key)) {
        
                putCharLinkedHashMap(pHashMap, entry->key, entry->value);
            }
        }
        CharLinkedHashIterator *pIterator2 = createCharLinkedHashMapIterator(linkedHashMap2);
        while (hasNextCharLinkedHashMapIterator(pIterator2)) {
        
            CharKvLinkedNode *entry = nextCharLinkedHashMapIterator(pIterator2);
            if (!containsKeyCharLinkedHashMap(linkedHashMap1, entry->key)) {
        
                putCharLinkedHashMap(pHashMap, entry->key, entry->value);
            }
        }
        return pHashMap;
    }
    
    //并集,返回一个新的Map集合 (如果有相同的key,则取linkedHashMap2的值)
    CharLinkedHashMap *unionCharLinkedHashMap(CharLinkedHashMap *linkedHashMap1, CharLinkedHashMap *linkedHashMap2) {
        
        CharLinkedHashMap *pHashMap = createCharLinkedHashMap(sizeCharLinkedHashMap(linkedHashMap1) + sizeCharLinkedHashMap(linkedHashMap2) );
        CharLinkedHashIterator *pIterator1 = createCharLinkedHashMapIterator(linkedHashMap1);
        while (hasNextCharLinkedHashMapIterator(pIterator1)) {
        
            CharKvLinkedNode *entry = nextCharLinkedHashMapIterator(pIterator1);
            putCharLinkedHashMap(pHashMap, entry->key, entry->value);
        }
        CharLinkedHashIterator *pIterator2 = createCharLinkedHashMapIterator(linkedHashMap2);
        while (hasNextCharLinkedHashMapIterator(pIterator2)) {
        
            CharKvLinkedNode *entry = nextCharLinkedHashMapIterator(pIterator2);
            putCharLinkedHashMap(pHashMap, entry->key, entry->value);
        }
        return pHashMap;
    }
    
    //清除map
    void clearCharLinkedHashMap(CharLinkedHashMap *linkedHashMap) {
        
        charHashMapClear(linkedHashMap->charHashMap);
        destroyCharKvLinked(linkedHashMap->charKvLinked);
        free(linkedHashMap);
    }

![在这里插入图片描述][241d60d901ab468c8532f2a2d4413093.gif]

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