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题解 | #二叉树的最大深度#

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

Java

2022-04-27

0 337

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

2022-04-27

0 417

题解 | #验证IP地址#手力劳动题

import java.util.*; public class Solution { boolean isIPv4 (String IP) { if(IP.indexOf('.') == -1){ return false; } String[] s = IP.split("\."); //IPv...

Java

2022-04-26

0 338

题解 | #最长公共前缀#分治法

import java.util.*; public class Solution { /** * * @param strs string字符串一维数组 * @return string字符串 */ public String longestCommonPrefix (String[] strs)...

Java

2022-04-26

0 386

题解 | #字符串变形#慎用split,会把字符串首尾的空格删除

import java.util.*; public class Solution { public String trans(String s, int n) { // write code here String[] str = s.split(" ",-1); int left=0,right...

Java

2022-04-26

0 419

题解 | #Redraiment的走法#

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

Java

2022-04-18

0 309

题解 | #表示数字#我菜啊

import java.util.*; public class Main{ public static void main(String[] args){ Scanner sc = new Scanner(Syst...

Java

2022-04-14

0 421

题解 | #记负均正#难就难在保留一位小数

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

Java

2022-04-14

0 290

题解 | #统计字符#简单题重拳出击

import java.io.*; import java.util.*; public class Main{ public static void main(String[] args) throws Exception{ &...

Java

2022-04-13

0 401

题解 | #字符逆序#

import java.io.*; import java.util.*; public class Main{ public static void main(String[] args){ Scanner sc ...

Java

2022-04-08

0 315