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hello-algo/en/codes/c/utils/list_node.h
Yudong Jin 14c314c08c Retranslate the complete English edition from Simplified Chinese (#2010)
* Retranslate the complete English edition from Simplified Chinese

* Polish three English explanations after reader-focused review
2026-10-31 03:35:51 +08:00

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1.2 KiB
C

/**
* 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
/* Linked list node structure */
typedef struct ListNode {
int val; // Node value
struct ListNode *next; // Reference to the next node
} ListNode;
/* Constructor: initialize a new node */
ListNode *newListNode(int val) {
ListNode *node;
node = (ListNode *)malloc(sizeof(ListNode));
node->val = val;
node->next = NULL;
return node;
}
/* Deserialize an array into a linked list */
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;
}
/* Free the memory allocated to the linked list */
void freeMemoryLinkedList(ListNode *cur) {
// Free memory
ListNode *pre;
while (cur != NULL) {
pre = cur;
cur = cur->next;
free(pre);
}
}
#ifdef __cplusplus
}
#endif
#endif // LIST_NODE_H