hello-algo/codes/csharp/chapter_searching/linear_search.cs

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/**
* File: linear_search.cs
* Created Time: 2022-12-23
* Author: haptear (haptear@hotmail.com)
*/
using hello_algo.include;
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using NUnit.Framework;
namespace hello_algo.chapter_searching;
public class linear_search
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{
/* 线性查找(数组) */
static int linearSearchArray(int[] nums, int target)
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{
// 遍历数组
for (int i = 0; i < nums.Length; i++)
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{
// 找到目标元素,返回其索引
if (nums[i] == target)
return i;
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}
// 未找到目标元素,返回 -1
return -1;
}
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/* 线性查找(链表) */
static ListNode? linearSearchLinkedList(ListNode head, int target)
{
// 遍历链表
while (head != null)
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{
// 找到目标节点,返回之
if (head.val == target)
return head;
head = head.next;
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}
// 未找到目标节点,返回 null
return null;
}
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[Test]
public void Test()
{
int target = 3;
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/* 在数组中执行线性查找 */
int[] nums = { 1, 5, 3, 2, 4, 7, 5, 9, 10, 8 };
int index = linearSearchArray(nums, target);
Console.WriteLine("目标元素 3 的索引 = " + index);
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/* 在链表中执行线性查找 */
ListNode head = ListNode.ArrToLinkedList(nums);
ListNode? node = linearSearchLinkedList(head, target);
Console.WriteLine("目标节点值 3 的对应节点对象为 " + node);
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}
}