/** * File: linear_search.cpp * Created Time: 2022-11-25 * Author: krahets (krahets@163.com) */ #include "../utils/common.hpp" /* 線性查詢(陣列) */ int linearSearchArray(vector &nums, int target) { // 走訪陣列 for (int i = 0; i < nums.size(); i++) { // 找到目標元素,返回其索引 if (nums[i] == target) return i; } // 未找到目標元素,返回 -1 return -1; } /* 線性查詢(鏈結串列) */ ListNode *linearSearchLinkedList(ListNode *head, int target) { // 走訪鏈結串列 while (head != nullptr) { // 找到目標節點,返回之 if (head->val == target) return head; head = head->next; } // 未找到目標節點,返回 nullptr return nullptr; } /* Driver Code */ int main() { int target = 3; /* 在陣列中執行線性查詢 */ vector nums = {1, 5, 3, 2, 4, 7, 5, 9, 10, 8}; int index = linearSearchArray(nums, target); cout << "目標元素 3 的索引 = " << index << endl; /* 在鏈結串列中執行線性查詢 */ ListNode *head = vecToLinkedList(nums); ListNode *node = linearSearchLinkedList(head, target); cout << "目標節點值 3 的對應節點物件為 " << node << endl; return 0; }