/** * File: linear_search.java * Created Time: 2022-11-25 * Author: krahets (krahets@163.com) */ package chapter_searching; import utils.*; public class linear_search { /* 線性查詢(陣列) */ static int linearSearchArray(int[] nums, int target) { // 走訪陣列 for (int i = 0; i < nums.length; i++) { // 找到目標元素,返回其索引 if (nums[i] == target) return i; } // 未找到目標元素,返回 -1 return -1; } /* 線性查詢(鏈結串列) */ static ListNode linearSearchLinkedList(ListNode head, int target) { // 走訪鏈結串列 while (head != null) { // 找到目標節點,返回之 if (head.val == target) return head; head = head.next; } // 未找到目標節點,返回 null return null; } public static void main(String[] args) { int target = 3; /* 在陣列中執行線性查詢 */ int[] nums = { 1, 5, 3, 2, 4, 7, 5, 9, 10, 8 }; int index = linearSearchArray(nums, target); System.out.println("目標元素 3 的索引 = " + index); /* 在鏈結串列中執行線性查詢 */ ListNode head = ListNode.arrToLinkedList(nums); ListNode node = linearSearchLinkedList(head, target); System.out.println("目標節點值 3 的對應節點物件為 " + node); } }