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题解 | #滑动窗口的最大值#

import java.util.*; public class Solution { public ArrayList<Integer> maxInWindows(int [] num, int size) { ArrayList<Integer> ...

2023-04-26

1 173

题解 | #有效括号序列#

import java.util.*; public class Solution { /** * * @param s string字符串 * @return bool布尔型 */ public boolean isValid (Stri...

2023-04-26

1 214

题解 | #包含min函数的栈#

import java.util.Stack; import java.util.PriorityQueue; public class Solution { PriorityQueue<Integer> priorityQueue = new PriorityQueue&...

2023-04-26

1 169

题解 | #用两个栈实现队列#

import java.util.Stack; public class Solution { Stack<Integer> stack1 = new Stack<Integer>(); Stack<Integer> stack2 = new S...

2023-04-26

1 160

题解 | #输出二叉树的右视图#

import java.util.*; 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 * 求二叉树的右视图 * @param xianxu int整型一维数组先序遍历 ...

2023-04-20

1 208

题解 | #重建二叉树#

import java.util.*; /** * Definition for binary tree * public class TreeNode { * int val; * TreeNode left; * TreeNode right; * T...

2023-04-20

1 265

题解 | #序列化二叉树#

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

2023-04-19

1 214

题解 | #二叉搜索树的最近公共祖先#

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

2023-04-17

1 318

题解 | #在二叉树中找到两个节点的最近公共祖先#

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

2023-04-17

1 229

题解 | #判断是不是平衡二叉树#

/* * public class TreeNode { * int val = 0; * TreeNode left = null; * TreeNode right = null; * } */ public class Solution { public boo...

2023-04-14

1 200