CentOS删除更新后遗留的无用内核
更新软件及内核yum update首先确定当前使用的内核。删错了就gg了uname -a然后查询并匹配安装的所有内核rpm -qa | grep kernel接着删除内核。在上面的列表中找到比当前内核版本低的进行删除yum remove 内核名
CentOS安装ClamAV杀毒
只需要简单的四步：首先添加epel源yum install -y epel-release yum -y update接着安装：yum install clamav-server clamav-data clamav-update clamav-filesystem clamav clamav-sc ...
二叉树的序列转换、二叉搜索树序列转换
前面说了那么多关于二叉树的，这篇来写个总结吧！主要是关于二叉树的序列转换。分别是：已知先序、中序，转后序； 已知先序、中序，转层序； &nb ...
PAT-A 真题- 1099. Build A Binary Search Tree
原题干：A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties:The left subtree of a node contains only nodes with keys less than the node's key.The right subtree of a node contains ...
PAT-A 真题- 1064. Complete Binary Search Tree
原题干：A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties:The left subtree of a node contains only nodes with keys less than the node's key.The right subtree of a node contains ...