You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
51 lines
1.4 KiB
51 lines
1.4 KiB
/**
|
|
* File: linear_search.java
|
|
* Created Time: 2022-11-25
|
|
* Author: Krahets (krahets@163.com)
|
|
*/
|
|
|
|
package chapter_searching;
|
|
|
|
import include.*;
|
|
|
|
public class linear_search {
|
|
/* 线性查找(数组) */
|
|
static 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) */
|
|
static 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;
|
|
}
|
|
|
|
public static void main(String[] args) {
|
|
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);
|
|
System.out.println("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);
|
|
System.out.println("目标节点值 3 的对应节点对象为 " + node);
|
|
}
|
|
}
|