题目描述：
LeetCode 572. Subtree of Another Tree
Given two non-empty binary trees s and t, check whether tree t has exactly the same structure and node values with a subtree of s. A subtree of s is a tree consists ...
归档 2017年5月
[LeetCode]Subtree of Another Tree
[LeetCode]Distribute Candies
作者是
发布于
在
LeetCode.
题目描述：
LeetCode 575. Distribute Candies
Given an integer array with even length, where different numbers in this array represent different kinds of candies. Each number means one candy of the corresponding kind. You need to distribute these candies equally in ...
[LeetCode]Employee Bonus
作者是
发布于
在
LeetCode.
题目描述：
Select all employee's name and bonus whose bonus is < 1000.
Table:Employee
+-------+--------+-----------+--------+ | empId | name | supervisor| salary | +-------+--------+-----------+--------+ | 1 | John | 3 | 1000 | | 2 | Dan | 3 | 2000 | | 3 | Brad | null | 4000 | | 4 | Thomas | 3 | 4000 | +-------+--------+-----------+--------+ empId is ...
fail2ban变更iptables封禁策略为DROP
作者是
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在
他山之石.
fail2ban的默认iptables封禁策略为 REJECT --reject-with icmp-port-unreachable
在/etc/fail2ban/action.d/目录下创建文件 iptables-blocktype.local
内容如下：
[Init] blocktype = DROP
重启fail2ban服务后，iptables封禁策略变更为DROP
[LeetCode]Find Median Given Frequency of Numbers
作者是
发布于
在
LeetCode.
题目描述：
LeetCode 571. Find Median Given Frequency of Numbers
The Numbers table keeps the value of number and its frequency.
+----------+-------------+ | Number | Frequency | +----------+-------------| | 0 | 7 | | 1 | 1 | | 2 | 3 | | 3 | 1 | +----------+-------------+
In this table, the numbers are 0, 0, 0, 0 ...