面试51题: 题目:数组中的逆序对 题目描述 在数组中的两个数字,如果前面一个数字大于后面的数字,则这两个数字组成一个逆序对.输入一个数组,求出这个数组中的逆序对的总数P.并将P对1000000007取模的结果输出. 即输出P%1000000007 输入描述: 题目保证输入的数组中没有的相同的数字 数据范围: 对于%50的数据,size<=10^4 对于%75的数据,size<=10^5 对于%100的数据,size<=2*10^5 示例1 输入 复制 1,2,3,4,5,6,7,0 输…

------------------------------------------------------- 51.(12-10)choose the best answer: Evaluate the following SQL statement: SQL> SELECT cust_id, cust_last_name FROM customers WHERE cust_credit_limit IN (select cust_credit_limit FROM customers WHE…

Student表: select * from student; 课程表Course: select * from course; 教师表teacher: select * from teacher; 成绩表Score: select * from sc; 1.查询" 01 "课程比" 02 "课程成绩高的学生的信息及课程分数 select c.*, a.score from sc a, sc b, student c and a.score>b.score;…

题目链接 题目: 通过置换*3的第一位得到的9个数中,有六个是质数:13,23,43,53,73和83. 通过用同样的数字置换56**3的第三位和第四位,这个五位数是第一个能够得到七个质数的数字,得到的质数是:56003, 56113, 56333, 56443, 56663, 56773, 和 56993.因此其中最小的56003就是具有这个性质的最小的质数. 找出最小的质数,通过用同样的数字置换其中的一部分(不一定是相邻的部分),能够得到八个质数. 解题思想: 这个题目是很难的 你首先要找到…

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…