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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 val) { this.val = val; ...

Java 二叉树分治

2022-02-12

2 367

题解 | #重建二叉树#

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

Java 二叉树

2022-02-11

0 325

题解 | #二叉搜索树的第k个节点#

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

Java 二叉树

2022-02-11

0 370

题解 | #按之字形顺序打印二叉树#

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

Java 二叉树广度优先搜索

2022-02-11

1 366

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 二叉树

2022-02-11

0 355

题解 | #实现二叉树先序，中序和后序遍历#

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

Java 二叉树

2022-02-11

0 439

题解 | #滑动窗口的最大值#

import java.util.*; //利用堆的方法解决，大根堆堆顶是滑动窗口的最大值 public class Solution { public ArrayList<Integer> maxInWindows(int [] num, int size) { if(size...

Java 数组队列树状数组

2022-02-10

0 316

题解 | #翻转单词序列#

public class Solution { public String ReverseSentence(String str) { //特殊情况 if(str == "") return""; //一般情况 //按照空格分隔字符串 String[] strSpilt = str....

Java 字符串

2022-02-10

0 301

题解 | #删除链表中重复的结点#

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

Java 链表

2022-02-10

0 331

题解 | #复杂链表的复制#

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

Java 链表哈希表

2022-02-09

0 316