To Write SQL query to create an index name TripIndex1 on the TripName field in the Trip table.

Question

7. See the code below and solve the following. public class Test { public static void main(String[] args) { int result = 0; } result = fn(2,3); System.out.println("The result is: + result); // fn(x, 1) = x // fn(x, y) = fn(x, y-1) + 2, when y>1 public static int fn(int x, int y) { if (x <= 1) return x; else return fn(x, y-1) + 2; } } 7-1. This program has a bug that leads to infinite recursion. Modify fn(int x, int y) method to fix the problem. (2 point) 7-2. Manually trace the recursive call, fn(2,3) and show the output (step by step). (2 point) 7-3. Can you identify the Base Case in recursive method fn(int x, int y)? (1 point)

Answer 1

Question

Chapter 4, Problem 4CATC

(a)

To determine

To Write SQL query to create an index name TripIndex1 on the TripName field in the Trip table.

(b)

To determine

To Write SQL query to create an index named TripIndex2 on the Type field in the Trip table.

(c)

To determine

To Write SQL query to create an index TripIndex3 on the Type and Season fields in the Trip table and list the seasons in descending order.

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7. See the code below and solve the following. public class Test { public static void main(String[] args) { int result = 0; } result = fn(2,3); System.out.println("The result is: + result); // fn(x, 1) = x // fn(x, y) = fn(x, y-1) + 2, when y>1 public static int fn(int x, int y) { if (x <= 1) return x; else return fn(x, y-1) + 2; } } 7-1. This program has a bug that leads to infinite recursion. Modify fn(int x, int y) method to fix the problem. (2 point) 7-2. Manually trace the recursive call, fn(2,3) and show the output (step by step). (2 point) 7-3. Can you identify the Base Case in recursive method fn(int x, int y)? (1 point)

6. See the code below and solve the following. import java.io.*; public class DataStream { } public static void main(String[] args) } DataOutputStream output = new DataOutputStream(new FileOutputStream("temp.dat")); output.writeUTF("Book1"); output.writeInt(85); output.writeUTF("Book2"); output.writeInt(125); output.writeUTF("Book3"); output.writeInt(70); output.close(); // ToDo: Read all data from temp.dat and print the data to the standard output (monitor) 6-1. This program has a compile error, and the message is “Unhandled exception type FileNotFoundException". How do you fix this error? (1 point) 6-2. Is FileNotFoundException a checked exception or an unchecked exception? (1 point) 6-3. What is the difference between checked exception and unchecked exception? (1 point) 6-4. Please complete the above program by reading all data from temp.dat and print the data to the standard output (monitor) by using System.out.print, System.out.println or System.out.printf method. (2 points)

Write a program that reads a list of integers from input and determines if the list is a palindrome (values are identical from first to last and last to first). The input begins with an integer indicating the length of the list that follows. Assume the list will contain a maximum of 20 integers. Output "yes" if the list is a palindrome and "no" otherwise. The output ends with a newline. Hints: - use a for loop to populate the array based on the specified size (the first number entered) - use a for loop to check first value with last value, second value with second from end, etc. - if the values do not match, set a Boolean variable to flag which statement to output (yes or no) Ex: If the input is (remember to include spaces between the numbers): 6 1 5 9 9 5 1 the output is: yes Ex: If the input is: 5 1 2 3 4 5 the output is: C++ coding

Answer 2

Question

Chapter 4, Problem 4CATC

(a)

To determine

To Write SQL query to create an index name TripIndex1 on the TripName field in the Trip table.

(b)

To determine

To Write SQL query to create an index named TripIndex2 on the Type field in the Trip table.

(c)

To determine

To Write SQL query to create an index TripIndex3 on the Type and Season fields in the Trip table and list the seasons in descending order.

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Answer 3

Question

Chapter 4, Problem 4CATC

(a)

To determine

To Write SQL query to create an index name TripIndex1 on the TripName field in the Trip table.

(b)

To determine

To Write SQL query to create an index named TripIndex2 on the Type field in the Trip table.

(c)

To determine

To Write SQL query to create an index TripIndex3 on the Type and Season fields in the Trip table and list the seasons in descending order.

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Answer 4

Question

Chapter 4, Problem 4CATC

(a)

To determine

To Write SQL query to create an index name TripIndex1 on the TripName field in the Trip table.

(b)

To determine

To Write SQL query to create an index named TripIndex2 on the Type field in the Trip table.

(c)

To determine

To Write SQL query to create an index TripIndex3 on the Type and Season fields in the Trip table and list the seasons in descending order.

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Answer 5

Chapter 4, Problem 4CATC

(a)

To determine

To Write SQL query to create an index name TripIndex1 on the TripName field in the Trip table.

(b)

To determine

To Write SQL query to create an index named TripIndex2 on the Type field in the Trip table.

(c)

To determine

To Write SQL query to create an index TripIndex3 on the Type and Season fields in the Trip table and list the seasons in descending order.

Answer 6

Chapter 4, Problem 4CATC

(a)

To determine

To Write SQL query to create an index name TripIndex1 on the TripName field in the Trip table.

Answer 7

Chapter 4, Problem 4CATC

(a)

To determine

To Write SQL query to create an index name TripIndex1 on the TripName field in the Trip table.

Answer 8

(b)

To determine

To Write SQL query to create an index named TripIndex2 on the Type field in the Trip table.

Answer 9

(b)

To determine

To Write SQL query to create an index named TripIndex2 on the Type field in the Trip table.

Answer 10

(c)

To determine

To Write SQL query to create an index TripIndex3 on the Type and Season fields in the Trip table and list the seasons in descending order.

Answer 11

(c)

To determine

To Write SQL query to create an index TripIndex3 on the Type and Season fields in the Trip table and list the seasons in descending order.

Answer 12

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Answer 13

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Ch. 4 - Prob. 1RQ Ch. 4 - Prob. 2RQ Ch. 4 - Prob. 3RQ Ch. 4 - Prob. 4RQ Ch. 4 - Prob. 5RQ Ch. 4 - Prob. 6RQ Ch. 4 - Prob. 7RQ Ch. 4 - Prob. 8RQ Ch. 4 - Prob. 9RQ Ch. 4 - Prob. 10RQ

To Write SQL query to create an index name TripIndex1 on the TripName field in the Trip table.

Solution Summary: The author explains how CREATE INDEX command is used in SQL to create an Index in the database.

To Write SQL query to create an index name TripIndex1 on the TripName field in the Trip table.

To Write SQL query to create an index named TripIndex2 on the Type field in the Trip table.

To Write SQL query to create an index TripIndex3 on the Type and Season fields in the Trip table and list the seasons in descending order.

Chapter 4 Solutions