48 lines
1.2 KiB
Dart
48 lines
1.2 KiB
Dart
/**
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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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/* Linear search (array) */
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int linearSearchArray(List<int> nums, int target) {
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// Traverse array
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for (int i = 0; i < nums.length; i++) {
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// Found the target element, thus return its index
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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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// Did not find the target element, thus return -1
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return -1;
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}
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/* Linear search (linked list) */
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ListNode? linearSearchList(ListNode? head, int target) {
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// Traverse the list
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while (head != null) {
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// Found the target node, return it
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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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// Target element not found, return 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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/* Perform linear search in array */
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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('目标元素 3 的索引 = $index');
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/* Perform linear search in linked list */
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ListNode? head = listToLinkedList(nums);
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ListNode? node = linearSearchList(head, target);
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print('目标节点值 3 的对应节点对象为 $node');
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}
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