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hello-algo/zh-hant/codes/c/utils/list_node.h

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1.2 KiB

/**
* File: list_node.h
* Created Time: 2023-01-09
* Author: Reanon (793584285@qq.com)
*/
#ifndef LIST_NODE_H
#define LIST_NODE_H
#ifdef __cplusplus
extern "C" {
#endif
/* 鏈結串列節點結構體 */
typedef struct ListNode {
int val; // 節點值
struct ListNode *next; // 指向下一節點的引用
} ListNode;
/* 建構子,初始化一個新節點 */
ListNode *newListNode(int val) {
ListNode *node;
node = (ListNode *)malloc(sizeof(ListNode));
node->val = val;
node->next = NULL;
return node;
}
/* 將陣列反序列化為鏈結串列 */
ListNode *arrToLinkedList(const int *arr, size_t size) {
if (size <= 0) {
return NULL;
}
ListNode *dummy = newListNode(0);
ListNode *node = dummy;
for (int i = 0; i < size; i++) {
node->next = newListNode(arr[i]);
node = node->next;
}
return dummy->next;
}
/* 釋放分配給鏈結串列的記憶體空間 */
void freeMemoryLinkedList(ListNode *cur) {
// 釋放記憶體
ListNode *pre;
while (cur != NULL) {
pre = cur;
cur = cur->next;
free(pre);
}
}
#ifdef __cplusplus
}
#endif
#endif // LIST_NODE_H