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java ArrayList去重案例
去除重复元素: public static ArrayList singleElement(ArrayList al) { //定义一个临时容器 ArrayList newAl = new ArrayList(); Iterator it = al.iterator(); while (it.has ...
分类:编程语言   时间:2020-04-05 18:36:34    阅读次数:64
POJ 2528 线段树+离散化
Description The citizens of Bytetown, AB, could not stand that the candidates in the mayoral election campaign have been placing their electoral poste ...
分类:其他好文   时间:2020-04-05 00:52:42    阅读次数:87
CF 1912 A NEKO's Maze Game
题目传送门 题目描述 NEKO#ΦωΦ has just got a new maze game on her PC! The game's main puzzle is a maze, in the forms of a 2×n2×n rectangle grid. NEKO's task is ...
分类:其他好文   时间:2020-04-04 22:34:42    阅读次数:81
【leetcode】1394. Find Lucky Integer in an Array
题目如下: Given an array of integers arr, a lucky integer is an integer which has a frequency in the array equal to its value. Return a lucky integer in t ...
分类:其他好文   时间:2020-04-04 14:18:51    阅读次数:71
ssh登陆提示 REMOTE HOST IDENTIFICATION HAS CHANGED
找到known_hosts文件把里面相应的主机那行删除即可 MAC/Linux vi ~/.ssh/known_hosts Windows C:\Users\用户登陆名\.ssh\known_hosts 报错信息: ? ssh root@mongo.top @@@@@@@@@@@@@@@@@@@@@ ...
分类:其他好文   时间:2020-04-04 09:38:24    阅读次数:68
ffmpeg 视频抽取音频,视音频分离
抽取音频命令ffmpeg -i 3.mp4 -vn -y -acodec copy 3.aacffmpeg -i 3.mp4 -vn -y -acodec copy 3.m4a 提取视频 (Extract Video)ffmpeg -i Life.of.Pi.has.subtitles.mkv -v ...
分类:其他好文   时间:2020-04-03 23:53:45    阅读次数:98
Using .NET Standard with Full Framework .NET
Using .NET Standard with Full Framework .NET .NET Standard has been around long enough now that most people are reasonably familiar with this somewhat ...
分类:Web程序   时间:2020-04-03 18:31:21    阅读次数:84
leetcode 53. Maximum Subarray
leetcode 53. Maximum Subarray 链接 "leetcode" 描述 Given an integer array nums, find the contiguous subarray (containing at least one number) which has th ...
分类:其他好文   时间:2020-04-03 16:25:10    阅读次数:60
python学习之:文件操作二
import logginglogging.basicConfig(level=logging.INFO)'''def check_number_exist(password_str): has_number = False for c in password_str: if c.isnumber( ...
分类:编程语言   时间:2020-04-03 13:40:45    阅读次数:73
leetcode-289
主要的问题是我们需要用上一个状态来判断当前状态。因为可能因为你变1之后影响其他的。 Perhaps that’s been the story of life func gameOfLife(board [][]int) { temp := make([][]int, len(board)) for ...
分类:其他好文   时间:2020-04-03 00:35:56    阅读次数:62
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