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			60 lines
		
	
	
		
			1.6 KiB
		
	
	
	
		
			C#
		
	
	
	
	
	
			
		
		
	
	
			60 lines
		
	
	
		
			1.6 KiB
		
	
	
	
		
			C#
		
	
	
	
	
	
/**
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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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using hello_algo.include;
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using NUnit.Framework;
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namespace hello_algo.chapter_searching
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{
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    public class linear_search
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    {
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        /* 线性查找(数组) */
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        static int linearSearch(int[] nums, int target)
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        {
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            // 遍历数组
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            for (int i = 0; i < nums.Length; i++)
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            {
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                // 找到目标元素,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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            // 未找到目标元素,返回 -1
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            return -1;
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        }
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        /* 线性查找(链表) */
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        static ListNode? linearSearch(ListNode head, int target)
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        {
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            // 遍历链表
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            while (head != null)
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            {
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                // 找到目标结点,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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            // 未找到目标结点,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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        {
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            int target = 3;
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            /* 在数组中执行线性查找 */
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            int[] nums = { 1, 5, 3, 2, 4, 7, 5, 9, 10, 8 };
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            int index = linearSearch(nums, target);
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            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 */
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            ListNode head = ListNode.ArrToLinkedList(nums);
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            ListNode? node = linearSearch(head, target);
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            Console.WriteLine("目标结点值 3 的对应结点对象为 " + node);
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        }
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    }
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}
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