A virus is spreading rapidly, and your task is to quarantine the infected area by installing walls. The world is modeled as a 2-D array of cells, where 0 represents uninfected cells, and 1 represents cells contaminated with the virus. A wall (and onl…

A virus is spreading rapidly, and your task is to quarantine the infected area by installing walls. The world is modeled as a 2-D array of cells, where 0 represents uninfected cells, and 1 represents cells contaminated with the virus. A wall (and onl…

749. 隔离病毒 病毒扩散得很快,现在你的任务是尽可能地通过安装防火墙来隔离病毒. 假设世界由二维矩阵组成,0 表示该区域未感染病毒,而 1 表示该区域已感染病毒.可以在任意 2 个四方向相邻单元之间的共享边界上安装一个防火墙(并且只有一个防火墙). 每天晚上,病毒会从被感染区域向相邻未感染区域扩散,除非被防火墙隔离.现由于资源有限,每天你只能安装一系列防火墙来隔离其中一个被病毒感染的区域(一个区域或连续的一片区域),且该感染区域对未感染区域的威胁最大且保证唯一. 你需要努力使得最后有部分区域…

Given an array of integers, find out whether there are two distinct indices i and j in the array such that the difference between nums[i] and nums[j] is at most t and the difference between i and j is at most k. 这道题跟之前两道Contains Duplicate 包含重复值和Conta…

Given an array of integers and an integer k, return true if and only if there are two distinct indices i and j in the array such that nums[i] = nums[j] and the difference between i and j is at most k. (Old Version) Given an array of integers and an i…

Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the array, and it should return false if every element is distinct. Example 1: Input: [1,2,3,1] Output: tru…

简介 小伙伴们,大家好,今天分享一次Linux系统杀毒的经历,还有个人的一些总结,希望对大家有用. 这次遇到的是一个挖矿的病毒,在挖一种叫门罗币(XMR)的数字货币,行情走势请看 https://www.feixiaohao.com/currencies/monero,该病毒的特征是会占满你的CPU. 该病毒的侵入方式是通过扫描主机的Redis端口,一般默认为6379,通过Redis命令将程序注入到你的主机,对的,没有设置密码的那种,我们的测试环境主机就因此中招. 病毒的发现和侦破 1.起初,收…

病毒侵袭 Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 19465    Accepted Submission(s): 4814 Problem Description 当太阳的光辉逐渐被月亮遮蔽,世界失去了光明,大地迎来最黑暗的时刻....在这样的时刻,人们却异常兴奋——我们能在有生之年看到500年一遇的世界奇观,那是多么幸福的事儿…

Given an array of integers and an integer k, find out whether there are two distinct indices i and j in the array such that nums[i] = nums[j] and the absolute difference between i and j is at most k. Example 1: Input: nums = [1,2,3,1], k = 3 Output:…

Given an array of integers, find out whether there are two distinct indices i and j in the array such that the absolute difference between nums[i] and nums[j] is at most t and the absolute difference between i and j is at most k. Example 1: Input: nu…