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