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一、配置步骤1.安装vsftp使用yum命令安装vsftp#yum install vsftpd -y2.添加ftp帐号和目录先确定nologin的位置，通常在/usr/sbin/nologin或者/sbin/nologin下，接着使用下面的命令创建帐户，该命令指定了、home/ftp01为用户ft... 阅读全文
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Given an arraySofnintegers, find three integers inSsuch that the sum is closest to a given number, target. Return the sum of the three integers. You m... 阅读全文
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Implement an iterator over a binary search tree (BST). Your iterator will be initialized with the root node of a BST.Callingnext()will return the next... 阅读全文
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Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as theHamming weight).For example, the 32-bit in... 阅读全文
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Reverse bits of a given 32 bits unsigned integer.For example, given input 43261596 (represented in binary as00000010100101000001111010011100), return ... 阅读全文
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1.修改MySQL的配置文件（默认为/etc/my.cnf）,在[mysqld]下添加一行skip-grant-tables2.保存配置文件后，重启MySQL服务 service mysqld restart3.再次进入MySQL命令行 mysql -uroot -p,输入密码时直接回车，进入MyS... 阅读全文
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Say you have an array for which theithelement is the price of a given stock on dayi.Design an algorithm to find the maximum profit. You may complete a... 阅读全文
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Say you have an array for which theithelement is the price of a given stock on dayi.If you were only permitted to complete at most one transaction (ie... 阅读全文
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For example:Given binary tree{1,#,2,3}, 1 \ 2 / 3return[1,3,2]./** * Definition for binary tree * public class TreeNode { * int val;... 阅读全文
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Given a list of non negative integers, arrange them such that they form the largest number.For example, given[3, 30, 34, 5, 9], the largest formed num... 阅读全文