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53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
/**
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* File: linear_search.c
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* Created Time: 2023-03-19
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* Author: Guanngxu (446678850@qq.com)
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*/
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#include "../utils/common.h"
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/* 线性查找(数组) */
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int linearSearchArray(int *nums, int len, int target) {
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// 遍历数组
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for (int i = 0; i < len; i++) {
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// 找到目标元素,返回其索引
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if (nums[i] == target)
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return i;
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}
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// 未找到目标元素,返回 -1
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return -1;
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}
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/* 线性查找(链表) */
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ListNode *linearSearchLinkedList(ListNode *head, int target) {
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// 遍历链表
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while (head != NULL) {
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// 找到目标节点,返回之
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if (head->val == target)
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return head;
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head = head->next;
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}
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// 未找到目标节点,返回 NULL
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return NULL;
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}
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/* Driver Code */
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int main() {
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int target = 3;
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/* 在数组中执行线性查找 */
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int nums[10] = {1, 5, 3, 2, 4, 7, 5, 9, 10, 8};
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int index = linearSearchArray(nums, 10, target);
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printf("目标元素 3 的索引 = %d\n", index);
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/* 在链表中执行线性查找 */
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ListNode *head = arrToLinkedList(nums, 10);
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ListNode *node = linearSearchLinkedList(head, target);
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if (node == NULL) {
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printf("目标节点值 3 的对应节点对象为 NULL\n");
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} else {
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printf("目标节点值 3 的对应节点对象为 addr: %p val: %d\n", node, node->val);
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}
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return 0;
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}
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