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题解 | #在二叉树中找到两个节点的最近公共祖先# 来自专栏

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

Java

2021-12-31

0 369

题解 | #在二叉树中找到两个节点的最近公共祖先# 来自专栏

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

Java

2021-12-30

0 331

题解 | #把数字翻译成字符串#

import java.util.*; public class Solution { /** * 解码 * @param nums string字符串数字串 * @return int整型 */ public int solve (String nums) { if(nums.length() ...

Java

2021-12-30

0 294

题解 | #字符串的排列#

import java.util.ArrayList; import java.util.TreeSet; public class Solution{ public ArrayList Permutation(String str){ ArrayList result = new ArrayLis...

Java

2021-12-30

0 374

题解 | #小红取数# 来自专栏

import java.io.; import java.util.; public class Main{ //dp代表和 static long[][]dp; static int k; public static void main(String[] args)throws IOExcepti...

Java

2021-12-19

0 581

题解 | #【模板】二维差分#

import java.util.*; public class Main { public static void main(String[] args){ Scanner sc = new Scanner(System.in); int n = sc.nextInt(); int m = sc....

Java

2021-12-19

0 502

题解 | #二叉树的下一个结点#

/* public class TreeLinkNode { int val; TreeLinkNode left = null; TreeLinkNode right = null; TreeLinkNode next = null; TreeLinkNode(int val) { thi...

Java

2021-12-18

0 320

题解 | #翻转单词序列#

public class Solution { public String ReverseSentence(String str) { String[] s = str.split(" "); String s1 = ""; int len = s.length; for(int i = len -...

Java

2021-12-18

0 282

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 (String s) { Stack stack = new Stac...

Java

2021-12-17

0 319

题解 | #删除链表的倒数第n个节点#

import java.util.*; /* public class ListNode { int val; ListNode next = null; } */ public class Solution { /** * * @param head ListNode类 * @param n ...

Java

2021-12-17

0 420