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72 lines
No EOL
1.4 KiB
C
72 lines
No EOL
1.4 KiB
C
/**
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* File: list_node.h
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* Created Time: 2023-01-09
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* Author: Reanon (793584285@qq.com)
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*/
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#ifndef LIST_NODE_H
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#define LIST_NODE_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Definition for a singly-linked list node
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*
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*/
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struct ListNode {
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int val; // 结点值
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struct ListNode *next; // 指向下一结点的指针（引用）
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};
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// typedef 为 C 语言的关键字，作用是为一种数据类型定义一个新名字
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typedef struct ListNode ListNode;
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ListNode *newListNode(int val) {
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ListNode *node, *next;
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node = (ListNode *) malloc(sizeof(ListNode));
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node->val = val;
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node->next = NULL;
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return node;
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}
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/**
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* @brief Generate a linked list with a vector
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*
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* @param list
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* @return ListNode*
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*/
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ListNode *arrToLinkedList(const int *arr, size_t size) {
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if (size <= 0) {
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return NULL;
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}
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ListNode *dummy = newListNode(0);
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ListNode *node = dummy;
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for (int i = 0; i < size; i++) {
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node->next = newListNode(arr[i]);
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node = node->next;
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}
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return dummy->next;
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}
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/**
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* @brief Get a list node with specific value from a linked list
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*
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* @param head
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* @param val
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* @return ListNode*
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*/
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ListNode *getListNode(ListNode *head, int val) {
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while (head != NULL && head->val != val) {
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head = head->next;
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}
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return head;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif // LIST_NODE_H
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