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50 lines
1.4 KiB
C#
50 lines
1.4 KiB
C#
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/**
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* File: linear_search.cs
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* Created Time: 2022-12-23
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* Author: haptear (haptear@hotmail.com)
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*/
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namespace hello_algo.chapter_searching;
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public class linear_search {
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/* 線性查詢(陣列) */
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int LinearSearchArray(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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// 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 != null) {
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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 null
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return null;
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}
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[Test]
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public void Test() {
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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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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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Console.WriteLine("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 = ListNode.ArrToLinkedList(nums);
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ListNode? node = LinearSearchLinkedList(head, target);
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Console.WriteLine("目標節點值 3 的對應節點物件為 " + node);
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}
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}
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