题解 | #牛的品种排序IV#
牛的品种排序IV
https://www.nowcoder.com/practice/bd828af269cd493c86cc915389b02b9f
import java.util.*;
/*
* public class ListNode {
* int val;
* ListNode next = null;
* public ListNode(int val) {
* this.val = val;
* }
* }
*/
public class Solution {
/**
* 代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可
*
*
* @param head ListNode类
* @return ListNode类
*/
public ListNode sortCowsIV (ListNode head) {
// write code here
List<Integer> list = new ArrayList<>();
while (head != null) {
list.add(head.val);
head = head.next;
}
list.sort(new Comparator<Integer>() {
@Override
public int compare(Integer o1, Integer o2) {
return o1 - o2;
}
});
ListNode node = new ListNode(0);
ListNode result = node;
for (int i = 0; i < list.size(); i++) {
node.next = new ListNode(list.get(i));
node = node.next;
}
return result.next;
}
}
本题考察的知识点是链表,所用编程语言是java。
我先将链表值加入集合中,然后进行排序,重建链表
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