Which of the following statements assigns a random integer between 1 and 10, inclusive, to rn ?

int rn = (int) (Math.random() * 10) + 1;

int rn = (int) (Math.random()) * 10;

int rn = (int) (Math.random()) * 10 + 1;

int rn = (int) (Math.random() * 10);

int rn = (int) (Math.random() + 1) * 10;

Which of the following best explains the effect of simultaneously changing x <= 4 to x < 4 in line 1 and y < 4 to y <= 4 in line 3 ?

"a" will be printed the same number of times because while the number of output lines will decrease by 1, the length of each line will increase by 1.

"a" will be printed fewer times because while each output line will have the same length as before, the number of lines printed will decrease by 1.

"a" will be printed more times because while the number of output lines will be the same as before, the length of each output line will increase by 1.

"a" will be printed more times because both the number of output lines and the length of each line will increase by 1.

The output of the code segment will not change in any way.

Which of the following best explains the effect, if any, of changing the first line of code to int j = 0; ?

There will be four more values printed because the outer loop will iterate one additional time.

There will be one more value printed because the outer loop will iterate one additional time.

There will be one less value printed because the outer loop will iterate one fewer time.

There will be four fewer values printed because the outer loop will iterate one fewer time.

There will be no change to the output of the code segment.

Which of the following can be used as a replacement for /* missing loop header */ so that the code segment produces the output 00_01_02_11_12_22_ ?

int inner = outer; inner < 3; inner++

int inner = 0; inner < 3; inner++

int inner = 1; inner < 3; inner++

int inner = outer - 1; inner < 3; inner++

int inner = outer + 1; inner < 3; inner++

Which of the following best explains how changing the outer for loop header to for (int j = 0; j <= 3; j++) affects the output of the code segment?

The string "Fun" will be printed more times because the outer loop will execute more times.

The output of the code segment will be unchanged.

The string "Fun" will be printed more times because the inner loop will execute more times in each iteration of the outer loop.

The string "Fun" will be printed fewer times because the outer loop will execute fewer times.

The string "Fun" will be printed fewer times because the inner loop will execute fewer times in each iteration of the outer loop.

Which of the following best describes the relationship between values produced by expression I and expression II?

Expression I and expression II evaluate to the same value only when A and B differ.

Expression I and expression II evaluate to different values for all values of A and B.

Expression I and expression II evaluate to the same value for all values of A and B.

Expression I and expression II evaluate to the same value only when A and B are the same.

Expression I and expression II evaluate to the same value whenever A is true.

Which of the following assigns the same value to b2 as the value stored in b1 ?

boolean b2 = false && (17 % 3 == 2);

boolean b2 = false || (17 % 3 == 2);

boolean b2 = true || (17 % 3 == 1);

boolean b2 = (true || false) && true;

boolean b2 = (true && false) || true;

Assume that the int variables a, b, c, and d have been properly declared and initialized. Which of the following code segments produces the same output as the given code segment for all values of a, b, c, and d ?

if (a >= b && c == d) { System.out.println("cat"); } else { System.out.println("dog"); }

if (a < b && c != d) { System.out.println("dog"); } else { System.out.println("cat"); }

if (a < b && c != d) { System.out.println("cat"); } else { System.out.println("dog"); }

if (a > b && c == d) { System.out.println("cat"); } else { System.out.println("dog"); }

if (a >= b || c == d) { System.out.println("cat"); } else { System.out.println("dog"); }

Which of the following code segments will produce the same output as the code segment above?

int j = 1; while (j < 10) { System.out.print(j); j += 2; }

int j = 1; while (j < 10) { j += 2; System.out.print(j); }

int j = 1; while (j <= 10) { j += 2; System.out.print(j); }

int j = 1; while (j >= 10) { j += 2; System.out.print(j); }

int j = 1; while (j >= 10) { System.out.print(j); j += 2; }

Which choice best describes the difference, if any, in the behavior of this statement that will result from changing x < str.length() to x <= str.length() in line 3 of the method?

The method call, which worked correctly before the change, will now cause a run-time error because it attempts to access a character at index 7 in a string whose last element is at index 6.

The method call will print fewer characters than it did before the change because the loop will iterate fewer times.

The method call will print more characters than it did before the change because the loop will iterate more times.

The method call, which worked correctly before the change, will now cause a run-time error because it attempts to access a character at index 8 in a string whose last element is at index 7.

The behavior of the code segment will remain unchanged.

Which of the following best explains how the output changes from code segment I to code segment II?

The code segments print the same values but in a different order, because code segment I iterates from 1 to 5 and code segment II iterates from 5 to 1.

Both code segments produce the same output, because they both iterate four times.

Both code segments produce the same output, because they both iterate five times.

Code segment I prints more values than code segment II does, because it iterates for one additional value of k.

Code segment II prints more values than code segment I, because it iterates for one additional value of k.

Code segment 1 prints the sum of the integers from 1 through 30, inclusive. Which of the following best explains how the output changes from code segment 1 to code segment 2 ?

Code segment 2 will print the sum of only the odd integers from 1 through 30, inclusive because it starts k at one, increments k by twos, and terminates when k exceeds 30.

Code segment 1 and code segment 2 will produce the same output.

Code segment 2 will print the sum of only the even integers from 1 through 30, inclusive because it starts sum at zero, increments k by twos, and terminates when k exceeds 30.

Code segment 2 will print the sum of only the even integers from 1 through 60, inclusive because it starts sum at zero, increments k by twos, and iterates 30 times.

Code segment 2 will print the sum of only the odd integers from 1 through 60, inclusive because it starts k at one, increments k by twos, and iterates 30 times.

Which of the following code segments will produce the same output as the code segment above?

for (int k = 1; k <= 8; k += 2) { System.out.print(k); }

for (int k = 0; k < 7; k += 2) { System.out.print(k); }

for (int k = 0; k <= 7; k += 2) { System.out.print(k); }

for (int k = 0; k <= 8; k += 2) { System.out.print(k + 1); }

for (int k = 1; k < 7; k += 2) { System.out.print(k + 1); }

Which of the following code segments will produce the same output as the code segment above?

int count = 0; for (int k = 9; k >= 0; k--) { count++; } System.out.println(count);

int count = 0; for (int k = 1; k < 10; k++) { count++; } System.out.println(count);

int count = 1; for (int k = 1; k <= 10; k++) { count++; } System.out.println(count);

int count = 1; for (int k = 0; k <= 9; k++) { count++; } System.out.println(count);

int count = 0; for (int k = 10; k >= 0; k--) { count++; } System.out.println(count);

APCS Unit 2

Authored by Maura Duffy

Computers

12th Grade

Used 7+ times

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27 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is printed as a result of executing the code segment?

12Z

12zee

3zee

onetwozee

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is printed as a result of executing the code segment?

008

0008

Nothing is printed, because numerical values cannot be added to a String object.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What, if anything, is printed when the code segment is executed?

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the value of num when the code segment is executed?

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is printed as a result of executing the code segment?

ABCD

BCDE

BCEF

BCDEF

ABCDEF

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is printed when the code segment is executed?

comp

c o m p

comp com co c

comp omp mp p

comp comp comp comp

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following could be used to replace /* missing code */ so that the code segment works as intended?

(int) (rn * max) + min

(int) (rn * max) + min - 1

(int) (rn * (max - min)) + min

(int) (rn * (max - min)) + 1

(int) (rn * (max - min + 1)) + min

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APCS Unit 2

What is printed as a result of executing the code segment?

What is printed as a result of executing the code segment?

What, if anything, is printed when the code segment is executed?

What is the value of num when the code segment is executed?

What is printed as a result of executing the code segment?

What is printed when the code segment is executed?

Which of the following could be used to replace /* missing code */ so that the code segment works as intended?

Which of the following statements assigns a random integer between 1 and 10, inclusive, to rn ?

Which of the following can replace /* missing code */ so that the method works as intended

Which of the following best explains the effect of simultaneously changing x <= 4 to x < 4 in line 1 and y < 4 to y <= 4 in line 3 ?

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