AP CS A Quiz 4 Practice

Given the code shown here, what are the first and last numbers output?

• 5 11

• 5 12

• 6 11

• 6 12

• none (error)

Organize these statements into the right categories of loops

Groups:

(a) for loop is best

,

(b) while loop is best

,

(c) either type of loop is ok

• when you know the number of iterations ahead of time

• to repeat an entire block of code

• to stop looping when a certain condition is met

• to control a loop with user input

• to perform a series of calculations

• to repeat code an extremely large number of times

• to use an integer variable to control how many times a loop runs

Choose which three values should replace the blanks in the for loop so that it loops through the numbers:

2 7 12 17 22 27

• 1, <=27, +=2

• 2, <=27, +=5

• 5, <27, +=2

• 2, <27, +=3

• 0, <=27, +=5

How many times will the "while" loop execute in this code?

• 30

• 26

• 22

• 18

• infinite loop

What changes are needed to the code shown here in order to print the odd numbers from 11 to 25 inclusive?

• x+=2 should be x++

• x < 25 should be x <= 25

• x+=2 should occur after the println

• int x = 11 should be int x = 9

• correct as is - no changes needed

What is the output of the code shown here?

• This is an infinite loop

• 1 2 0 9 5

• 2 0 9 5 1

• 9 0 2 1 0

• 5 9 0 2 1

Choose which three values should replace the blanks in the for loop so that it loops through the numbers:

11 9 7 5 3 1

• 11, <=11, --

• 1, <11, +=2

• 11, >=1, -=2

• 11, >1, --

• 1, <=11, -=2

Consider the following possible replacements for /* missing code */.

Which option(s) will cause the code segment to print only the values:

2 22 42 62 82 ?

I. x < 100

II. x <= 80

III. x != 100

• I only

• II only

• I and II only

• II and III only

• I, II, and III

What is the output of the code segment shown here?

• 36

• 24 12

• 36 24 12

• 36 32 28 24 20 16 12 8 4 0

• 36 33 30 27 24 21 18 15 12 9 6 3