第二题 生日蜡烛(结果填空) 某君从某年开始每年都举办一次生日party,并且每次都要吹熄与年龄相同根数的蜡烛. 现在算起来,他一共吹熄了236根蜡烛. 请问,他从多少岁开始过生日party的? 请填写他开始过生日party的年龄数. 注意:提交的应该是一个整数,不要填写任何多余的内容或说明性文字. 分析: 设过生日的岁数是[start, end],则end>start(end==start时,为236,不可能,排除) package bb; public class 生日蜡烛 { privat…

choose one In your Oracle 12c database, you plan to execute the command: SQL> CREATE TABLESPACE tbsl DATAFILE '/u02/oracle/data/tbs0l.dbf' SIZE 50M; The u02 file system has 1 GB of free space available. What is the outcome? A) It raises an error beca…

3.A database is open read write and the instance has multiple sessions some of which have active transactions. You execute this command: SQL> ALTER SYSTEM ENABLE RESTRICTED SESSION; Which three are true about the active transactions? A) They may cont…

80.View the exhibit and examine the structure in ORDERS and ORDER_ITEMS tables. You need to create a view that displays the ORDER_ID, ORDER_DATE, and the total number of items in each order. Which CREATE VIEW statement would create the views successf…

79.Which statement is true about transactions? A. A set of Data Manipulation Language (DML) statements executed in a sequence ending with a SAVEPOINT forms a single transaction. B. Each Data Definition Language(DDL) statement executed forms a single…

78.View the exhibit and examine the structure of the CUSTOMERStable. Which two tasks would require subqueries or joins to be executed in a single statement? A. finding the number of customers, in each city, whose credit limit is more than the average…

77.Which two statements are true about sequences created in a single instance database? (Choose two.) A. When the MAXVALUElimit for the sequence is reached, you can increase the MAXVALUElimit by using the ALTER SEQUENCEstatement. B. DELETE < sequence…

76.View the exhibit and examine the description of the DEPARTMENTSand EMPLOYEEStables. The retrieve data for all the employees for their EMPLOYEE_ID, FIRST_NAME, and DEPARTMENT NAME, the following SQL statement was written: SELECT employee_id, first_…

75.Which statements are correct regarding indexes? (Choose all that apply.) A. A non-deferrable PRIMARY KEYor UNIQUE KEYconstraint in a table automatically attempts to creates a unique index. B. Indexes should be created on columns that are frequentl…

74.View the exhibit and examine the structure of ORDERS and CUSTOMERS tables. ORDERS Name     Null?       Type ORDER_ID  NOT NULL  NUMBER(4) ORDER_DATE  NOT NULL   DATE ORDER_MODE   VARCHAR2(8) CUSTOMER_ID NOT NULL  NUMBER(6) ORDER_TOTAL   NUMBER(8,…

73.Which statement correctly grants a system privilege? A. GRANT CREATE VIEW ON table1 TO user1; B. GRANT ALTER TABLE TO PUBLIC; C. GRANT CREATE TABLE TO user1, user2; D. GRANT CREATE SESSION TO ALL; Correct Answer: C Section: (none) Explanation 解析:无…

72.View the exhibit for the structure of the STUDENTand FACULTYtables. STUDENT Name Null? Type ------------------ ------------------- ------------- STUDENT_ID NOT NULL NUMBER(2) STUDENT_NAME VARCHAR2(20) FACULTY_ID VARCHAR2(2) LOCATION_ID NUMBER(2) F…

71.(32-18) choose three Which three statements indicate the end of a transaction? (Choose three.) A) after a CREATE statement is issued B) after a SELECT statement is issued C) after a ROLLBACK is issued D) after a SAVEPOINT is issued E) after a COMM…

70.(31-2)choose the best answer: View the Exhibit and examine the structure of the Book table. The BOOKS table contains details of 100 books. Examine the commands executed and their outcome: SQL>INSERT INTO books VALUES ('ADV112', 'Adventures of Tom…

69.(31-1)choose the best answer: Evaluate the following query: SELECT INTERVAL '300' MONTH, INTERVAL '54-2' YEAR TO MONTH, INTERVAL '11:12:10.1234567' HOUR TO SECOND FROM dual; What is the correct output of the above query? A) +25-00 , +00-650, +00 1…

38.Which three are true about the Automatic Database Diagnostic Monitor (ADDM)? A) Its findings are accessible only by using Oracle Enterprise Manager. B) It improves database performance by automatically implementing Oracle's best practices. C) It c…

给出\(n\)个数,用最少的\(2^k\)或\(-2^{k}\),使得能拼出所有数,输出方案.\(n,|a_i|\leq 10^5\). 显然一个绝对值最多选一次.这个性质非常强. 如果所有都是偶数,可以直接除以\(2\). 否则\(1\)或\(-1\)必须选,暴力枚举选哪个然后递归,每层去重,发现最多只会递归\(\log a\)次.总复杂度\(O((n+a)\log n)\),等价于线段树上区间长度总和. \(n\)个数,每次可以花费\(1\)的代价给某个数\(+1\)或\(-1\),问变成不…

0628: 051 OK053 1-192! 加油了,每天至少100道吧明天复习一下626,627,628这几天的成果先看一遍对的,再看一遍错的!!最少要把051复习一遍 0629: 今天忙了太久 只看了051前两页的错题! 明天任务: 051后几页的错题.ok 053所有的错题.ok 20140701 053 error review rto336 明天051,p053 right review 051OK 053还没有做完 20140704 任务: 053 right do two page…

这是悦乐书的第160次更新,第162篇原创 01 前情回顾 昨晚的爬楼梯算法题,有位朋友提了个思路,使用动态规划算法.介于篇幅问题,这里不细说动态规划算法,以后会在数据机构和算法的理论知识里细说. 昨晚的三个解法中,根据测试数据和结果,第三种解法是最优的,但是还能不能更进一步呢?经过推导,我们得知当n大于等于3的时候,f(n) = f(n-1)+f(n-2),也就是说我们只需要得到n的前面两位的结果即可,对此我们使用了数组,将每个值都存起来了,最后取出数组中的最后一位元素.那么是否可以将数组也省…

这是悦乐书的第148次更新,第150篇原创 01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第7题(顺位题号是21).合并两个已排序的链表并将其作为新链表返回. 新链表应该通过拼接前两个链表的节点来完成.例如: 链表L1包含三个节点,为1,2,4 链表L2包含三个节点,为1,3,4 将L1和L2合并后的新链表包含6个节点,为1,1,2,3,4,4 本次解题使用的开发工具是eclipse,jdk使用的版本是1.8,环境是win7 64位系统,使用Java语言编写和测试. 02…

reference: http://kafka.apache.org/quickstart  http://dblab.xmu.edu.cn/blog/1096-2/ hadoop@iZuf68496ttdogcxs22w6sZ:/usr/local$ sudo tar zvxf /home/hadoop/kafka_2.10-0.10.1.0.tgz  -C  /usr/local/ hadoop@iZuf68496ttdogcxs22w6sZ:/usr/local$ sudo mv kafk…

code { white-space: pre } div.sourceCode { } table.sourceCode,tr.sourceCode,td.lineNumbers,td.sourceCode { margin: 0; padding: 0; vertical-align: baseline; border: none } table.sourceCode { width: 100%; line-height: 100% } td.lineNumbers { text-align…

因为不是一队……毫无晋级的压力……反正有压力也进不去呵呵呵…… 开场zr看1006我看1010.. 1010我一直在wa... zr的1006倒是比较轻松的过了...然后我让他帮我看10.... 跟他讲了半天我代码的逻辑...然后我自己看出来的....比赛的代码....写的十分混乱.... #include <cstdio> #include <cstring> #include <algorithm> #include <vector> typedef l…

20155324 2016-2017-2 <Java程序设计>第十周学习总结 教材学习内容总结 Java的网络编程 网络编程 网络编程就是在两个或两个以上的设备(例如计算机)之间传输数据. 网络概述 1.计算机网络概述 (1)路由器和交换机组成了核心的计算机网络,计算机只是这个网络上的节点以及控制等,通过光纤.网线等连接将设备连接起来,从而形成了一张巨大的计算机网络. (2)网络最主要的优势在于共享:共享设备和数据,现在共享设备最常见的是打印机. (3)IP地址:为了能够方便的识别网络上的每个…

http://forum.miata.net/vb/showthread.php?t=536601 Hey all! About 5 years ago, there was a great thread on reverse engineering the NC ECU (http://forum.miata.net/vb/showthread.php?t=341366). In the spirit of that thread, I wanted to continue the discu…

别人给了一个Oracle文件,结果在导入的时候发现有问题,报错如下: IMP-00010: not a valid export file, header failed verification 在网上查询后发现,是版本数据库问题造成,使用UE编辑器打开dmp文件,看到首行如下: 上图表明该数据库版本为:Oracle12c的版本 使用SQL:select * from v$version 查询当前数据库版本 我们将dmp文件的TEXPORT:V12.02修改为V11.02,再次导入,完美解决问题…

从命令行启动仿真器,可以查看其输出. Microsoft Windows [版本 10.0.18362.145] (c) 2019 Microsoft Corporation.保留所有权利. C:\Users\geffzhang>msinfo32 C:\Users\geffzhang>sc query intelhaxm SERVICE_NAME: intelhaxm         TYPE               : 1  KERNEL_DRIVER         STATE    …

            01 赛题解答 (1)目标:了解modbus协议 (2)解题: 密文:666C61677B45333342374644384133423834314341393639394544444241323442363041417D 直接解码:http://ctf.ssleye.com/base64.html flag{E33B7FD8A3B841CA9699EDDBA24B60AA} 02 赛题解答 (1)目标:了解modbus协议 Modbus是一种串行通信协议,是Modico…

You create an access control list(ACL)using the DBMS_NETWORK_ACL_ADMIN package It is a list of users and network privileges stored in the XML file according to which a groupof users can connect to one or more hosts. (The DBMS_NETWORK_ACL_ADMIN packag…

本人于2017年4月22日通过参加OCP考试,第一次参加,一天之内考了三门,三门一次性通过,052 - 95% ,053 - 86% ,051 - 100% 一.关于考试考试报名费: 052:158$ 053:158$ 051:132$ 考试合格线: 052:66% 053: 66% 051: 60% 本人分数: 052:95% 053: 86% 051: 100% 考试题量: 052:70题 053: 78题 051: 64题 考试时间(计划): 052: 9:00-11:00(2小时) 05…