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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)
*/
namespace hello_algo.chapter_searching;
public class linear_search {
/* 线性查找(数组) */
int LinearSearchArray(int[] nums, int target) {
// 遍历数组
for (int i = 0; i < nums.Length; i++) {
// 找到目标元素,返回其索引
if (nums[i] == target)
return i;
}
// 未找到目标元素,返回 -1
return -1;
}
/* 线性查找(链表) */
ListNode? LinearSearchLinkedList(ListNode? head, int target) {
// 遍历链表
while (head != null) {
// 找到目标节点,返回之
if (head.val == target)
return head;
head = head.next;
}
// 未找到目标节点,返回 null
return null;
}
[Test]
public void Test() {
int target = 3;
/* 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);
/* 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);
}
}