Question 1

Rewrite the following nested if-else statement as an equivalent switch statement.
if (letter == 'A' | | letter == 'a') System.out.println("Excellent");
else if (letter == 'B' | | letter == 'b') System.out.println("You can do better");
else if (letter == 'C' | | letter == 'c') System.out.println("Try harder");
else if (letter == 'D' | | letter == 'd') System.out.println("Try much harder");
else System.out.println("Try another major! ");

Accepted Answer

The answer of Rewrite the following nested if-else statement as...

Question 2

How many times will the System.out.println(*); statement execute inside of the following nested for-loops?
for (j=0; j<10; j++)
for (k=10;k>j;k--)
System.out.println("*");

Accepted Answer

The answer of How many times will the System.out.println(*); statement...

Question 3

The following loop is syntactically valid.
for (int j = 0; j < 1000; j++) j--;

Accepted Answer

The Java compiler does not care that you are incrementing j in the loop but decrementing j in the loop body. Logically, this loop makes no sense because j will continuously be incremented and decremented so that it never reaches 1000, but there is nothing wrong with the loop syntactically.

Question 4

Write a paint method to draw out an American flag. The flag will comprise a blue square in the upper left corner and 13 red and white stripes, starting with red, and alternating. 6 of the 13 stripes appear to the right of the blue square and the last 7 stripes appear beneath the blue square extending as far right as the other stripes. Use a for-loop to draw the stripes. Do not try to draw any stars in the blue square.

Accepted Answer

The answer of Write a paint method to draw out...

Question 5

The following for-loop is odd in that the loop increment value changes during iterations of the loop. Determine the number of times the loop iterates and the final value of j after the loop terminates.
int k = 0;
for (j = 0; j < 20; j += k)
k++;

Accepted Answer

The answer of The following for-loop is odd in that...

Question 6

Write a set of code that outputs all of the int values between 1 and 100 with 5 values per line, and each of those 5 values spaced out equally. Use a single for-loop to solve this problem.

Accepted Answer

The answer of Write a set of code that outputs...

Question 7

A dialog box is a device which accepts voice commands.

Accepted Answer

A dialog box is a graphical window that pops up so that the user can interact with it.
6.3 Free-Form Questions

Question 8

A data verification loop is a loop that asks the user to input a value within a restricted range repeatedly until the user has input a value within the requested range. Write a data verification loop that that inputs an int value x within the range 0 and 100. Assume cs1.Keyboard has been imported.

Accepted Answer

The answer of A data verification loop is a loop...

Question 9

Show the output that would occur from the following code, including proper spacing.
for (j = 0; j < 5; j++)
{
for (k = 0; k < 5; k++)
if (j!=k)
System.out.print(' ');
else
System.out.print('*');
System.out.println( );
}

Accepted Answer

The answer of Show the output that would occur from...

Question 10

Rewrite the following if-else statement using a conditional operator.
if (x > y) z = x; else z = y;

Accepted Answer

The answer of Rewrite the following if-else statement using a...

Question 11

Write some code that inputs a set of int values and computes its average. Ask the user first how many int values will be input. Make sure that your code cannot produce a division by zero error. Assume that cs1.Keyboard has been imported.

Accepted Answer

The answer of Write some code that inputs a set...

Question 12

Given the following tax table information, write Java code to assign the double taxRate appropriately given the double pay. Select the selection statement (if, if-else, switch) that makes the most sense.
If pay is more than 100,000, tax rate is 40%
If pay is more than 60,000 and less than or equal to 100,000, tax rate is 30%
If pay is more than 30,000 and less than or equal to 60,000, tax rate is 20%
If pay is more than 15,000 and less than or equal to 30,000, tax rate is 10%
If pay is more than 5,000 and less than or equal to 15,000, tax rate is 5%
If pay is less than or equal to 5,000, tax rate is 0%

Accepted Answer

The answer of Given the following tax table information, write...

Question 13

In Java, it is possible to create an infinite loop out of while and do loops, but not for-loops.

Accepted Answer

It is True that while and do loops can be infinite loops, but it is also True that Java for-loops can be infinite loops. This is not True in many other programming languages where for-loops have a set starting and ending point, but Java for-loops are far more flexible than most other language's for-loops.

Question 14

Describe a situation where you should use a do loop and a situation where you should use a while loop.

Accepted Answer

The answer of Describe a situation where you should use...

Question 15

The following code has a syntax error immediately before the word else. What is the error and why does it arise?
 Fix the code so that this statement is a legal if-else statement.
if (x < 0) ; x++;
else x--;

Accepted Answer

The answer of The following code has a syntax error...

Question 16

Write a "query-controlled" loop that will continue to input int values from the user, adding each to the int value sum, and then ask if the user has another value to input, until the user says that there are no more values. Assume that cs1.Keyboard has been imported.

Accepted Answer

The answer of Write a "query-controlled" loop that will continue...

Quiz 6: More Conditionals and Loops

How many times will the System.out.println(); statement execute inside of the following nested for-loops? for (j=0; j<10; j++) for (k=10;k>j;k--) System.out.println("");

The following loop is syntactically valid. for (int j = 0; j < 1000; j++) j--;

The following for-loop is odd in that the loop increment value changes during iterations of the loop. Determine the number of times the loop iterates and the final value of j after the loop terminates. int k = 0; for (j = 0; j < 20; j += k) k++;

Write a set of code that outputs all of the int values between 1 and 100 with 5 values per line, and each of those 5 values spaced out equally. Use a single for-loop to solve this problem.

A dialog box is a device which accepts voice commands.

A data verification loop is a loop that asks the user to input a value within a restricted range repeatedly until the user has input a value within the requested range. Write a data verification loop that that inputs an int value x within the range 0 and 100. Assume cs1.Keyboard has been imported.

Show the output that would occur from the following code, including proper spacing. for (j = 0; j < 5; j++) { for (k = 0; k < 5; k++) if (j!=k) System.out.print(' '); else System.out.print('*'); System.out.println( ); }

Rewrite the following if-else statement using a conditional operator. if (x > y) z = x; else z = y;

Write some code that inputs a set of int values and computes its average. Ask the user first how many int values will be input. Make sure that your code cannot produce a division by zero error. Assume that cs1.Keyboard has been imported.

In Java, it is possible to create an infinite loop out of while and do loops, but not for-loops.

Describe a situation where you should use a do loop and a situation where you should use a while loop.

The following code has a syntax error immediately before the word else. What is the error and why does it arise? Fix the code so that this statement is a legal if-else statement. if (x < 0) ; x++; else x--;

Write a "query-controlled" loop that will continue to input int values from the user, adding each to the int value sum, and then ask if the user has another value to input, until the user says that there are no more values. Assume that cs1.Keyboard has been imported.

Quiz 6: More Conditionals and Loops

How many times will the System.out.println(*); statement execute inside of the following nested for-loops? for (j=0; j<10; j++) for (k=10;k>j;k--) System.out.println("*");

The following loop is syntactically valid. for (int j = 0; j < 1000; j++) j--;

The following for-loop is odd in that the loop increment value changes during iterations of the loop. Determine the number of times the loop iterates and the final value of j after the loop terminates. int k = 0; for (j = 0; j < 20; j += k) k++;

Write a set of code that outputs all of the int values between 1 and 100 with 5 values per line, and each of those 5 values spaced out equally. Use a single for-loop to solve this problem.

A dialog box is a device which accepts voice commands.

A data verification loop is a loop that asks the user to input a value within a restricted range repeatedly until the user has input a value within the requested range. Write a data verification loop that that inputs an int value x within the range 0 and 100. Assume cs1.Keyboard has been imported.

Show the output that would occur from the following code, including proper spacing. for (j = 0; j < 5; j++) { for (k = 0; k < 5; k++) if (j!=k) System.out.print(' '); else System.out.print('*'); System.out.println( ); }

Rewrite the following if-else statement using a conditional operator. if (x > y) z = x; else z = y;

Write some code that inputs a set of int values and computes its average. Ask the user first how many int values will be input. Make sure that your code cannot produce a division by zero error. Assume that cs1.Keyboard has been imported.

In Java, it is possible to create an infinite loop out of while and do loops, but not for-loops.

Describe a situation where you should use a do loop and a situation where you should use a while loop.

The following code has a syntax error immediately before the word else. What is the error and why does it arise? Fix the code so that this statement is a legal if-else statement. if (x < 0) ; x++; else x--;

Write a "query-controlled" loop that will continue to input int values from the user, adding each to the int value sum, and then ask if the user has another value to input, until the user says that there are no more values. Assume that cs1.Keyboard has been imported.

How many times will the System.out.println(); statement execute inside of the following nested for-loops? for (j=0; j<10; j++) for (k=10;k>j;k--) System.out.println("");