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48 lines
1.2 KiB
48 lines
1.2 KiB
/**
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* File: linear_search.dart
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* Created Time: 2023-05-12
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* Author: Jefferson (JeffersonHuang77@gmail.com)
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*/
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import '../utils/list_node.dart';
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/* 線性查詢（陣列） */
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int linearSearchArray(List<int> nums, int target) {
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// 走訪陣列
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for (int i = 0; i < nums.length; 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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}
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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? linearSearchList(ListNode? head, int target) {
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// 走訪鏈結串列
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while (head != null) {
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// 找到目標節點，返回之
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if (head.val == target) return head;
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head = head.next;
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}
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// 未找到目標元素，返回 null
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return null;
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}
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/* Driver Code */
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void 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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List<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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print('目標元素 3 的索引 = $index');
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/* 在鏈結串列中執行線性查詢 */
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ListNode? head = listToLinkedList(nums);
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ListNode? node = linearSearchList(head, target);
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print('目標節點值 3 的對應節點物件為 $node');
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}
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