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题解 | #二叉树的前序遍历#

import java.util.*; /* * public class TreeNode { * int val = 0; * TreeNode left = null; * TreeNode right = null; * public TreeNode(int v...

2023-03-18

0 295

题解 | #反转链表#

import java.util.Stack; public class Solution { public ListNode ReverseList(ListNode head) { ListNode newHead = head; if (head == nu...

2023-03-18

0 223

题解 | #反转链表#

/* public class ListNode { int val; ListNode next = null; ListNode(int val) { this.val = val; } }*/ public class Solution { ...

2023-03-15

0 277