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题解 | #把字符串转换成整数(atoi)#

import java.util.*; class Solution { public boolean isNumChar(char ch) { return ch >= '0' && ch <= '9'; } public i...

Java

2022-05-07

0 340

题解 | #把字符串转换成整数#

public class Solution { public boolean isNumChar(char ch) { return ch >= '0' && ch <= '9'; } public int StrToInt(Str...

Java

2022-05-07

0 327

题解 | #二叉树中和为某一值的路径(二)#

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

Java

2022-05-06

0 346

题解 | #输入整型数组和排序标识，对其元素按照升序或降序进行排序#

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

Java

2022-05-06

0 374

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) { re...

Java

2022-05-05

0 293

题解 | #按之字形顺序打印二叉树#

import java.util.ArrayList; import java.util.LinkedList; /* public class TreeNode { int val = 0; TreeNode left = null; TreeNode right = n...

Java

2022-05-05

0 302

题解 | #把二叉树打印成多行#

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

Java

2022-05-04

0 289

题解 | #从上往下打印二叉树#

import java.util.ArrayList; import java.util.LinkedList; /** public class TreeNode { int val = 0; TreeNode left = null; TreeNode right = n...

Java

2022-05-04

0 290

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...

Java

2022-05-04

0 251

题解 | #树的子结构#

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

Java

2022-05-04

0 387