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题解 | #二叉搜索树与双向链表#

/** public class TreeNode { int val = 0; TreeNode left = null; TreeNode right = null; public TreeNode(int val) { this.val = v...

2023-06-04

0 219

题解 | #复杂链表的复制#

/* public class RandomListNode { int label; RandomListNode next = null; RandomListNode random = null; RandomListNode(int label) { ...

2023-06-03

0 251

题解 | #二叉树中和为某一值的路径(一)#

import java.util.ArrayList; import java.util.LinkedList; import java.util.stream.Collectors; /* * public class TreeNode { * int val = 0; * Tre...

2023-06-03

0 231

题解 | #二叉树中和为某一值的路径(二)#

import java.util.ArrayList; import java.util.LinkedList; import java.util.stream.Collectors; /** public class TreeNode { int val = 0; TreeNode...

2023-06-03

0 204

题解 | #设计LRU缓存结构#

import java.util.*; public class Solution { class Node { int key, val; Node prex, next; Node() {}; Node(int key, ...

2023-06-03

0 185

题解 | #二叉搜索树的后序遍历序列#

public class Solution { public boolean VerifySquenceOfBST(int [] sequence) { if (sequence == null || sequence.length == 0) return false; ...

2023-06-02

0 284

题解 | #从上往下打印二叉树#

import java.util.ArrayList; import java.util.LinkedList; import java.util.Queue; /** public class TreeNode { int val = 0; TreeNode left = nul...

2023-06-02

0 234

题解 | #栈的压入、弹出序列#

import java.util.ArrayList; import java.util.Stack; public class Solution { public boolean IsPopOrder(int [] pushA, int [] popA) { if (pus...

2023-06-02

0 241

题解 | #包含min函数的栈#

import java.util.Stack; public class Solution { private Node head; /** initialize your data structure here. */ public Solution() { ...

2023-06-02

0 219

题解 | #二叉树的镜像#

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

2023-06-02

0 208