Deck 4: Loops

Question 1

A loop inside another loop is called:

A) A sentinel loop
B) A nested loop
C) A parallel loop
D) A do/while loop

Answer 1

B

Question 2

What is the output of the code fragment given below?
Int i = 0;
Int j = 0;
While (i < 27)
{
I = i + 2;
J++;
}
System.out.println("j=" + j);

A) j=27
B) j=12
C) j=13
D) j=14

Answer 2

D

Question 3

What is the output of the following code snippet?
Int i = 1;
While (i < 10)
{
System.out.print(i + " ");
I = i + 2;
If (i == 5)
{
I = 9;
}
}

A) 1 3 5
B) 1 3 9
C) 1 3 5 7 9
D) 1 3 5 9

Answer 3

B

Question 4

The code snippet below checks whether a given number is a prime number. What will be the result of executing it?
Public static void main(String[] args)
{
Int j = 2;
Int result = 0;
Int number = 0;
Scanner reader = new Scanner(System.in);
System.out.println("Please enter a number: ");
Number = reader.nextInt();
While (j <= number / 2)
{
If (number % j == 0)
{
Result = 1;
}
J++;
}
If (result == 1)
{
System.out.println("Number: " + number + " is Not Prime.");
}
Else
{
System.out.println("Number: " + number + " is Prime. ");
}
}

A) The code snippet will not compile.
B) The code snippet will display the desired result.
C) The code snippet will display an incorrect result.
D) The code snippet will loop forever.

Question 5

How many times does the following loop run?
Int i = 0;
Int j = 1;
Do
{
System.out.println("" + i + ";" + j);
I++;
If (i % 2 == 0)
{
J--;
}
}
While (j >= 1);

A) 0 times
B) 1 times
C) 2 times
D) 4 times

Question 6

What is the output of the following code fragment?
Int i = 1;
Int sum = 0;
While (i <= 11)
{
Sum = sum + i;
I++;
}
System.out.println("The value of sum is " + sum);

A) The value of sum is 65
B) The value of sum is 66
C) The value of sum is 55
D) The value of sum is 56

Question 7

How many times will the following loop run?
Int i = 0;
While (i < 10)
{
System.out.println(i);
I++;
}

A) 0
B) 8
C) 9
D) 10

Question 8

Which error type does the "off-by-one" error belong to?

A) Syntax error
B) Compile-time error
C) Run-time error
D) Infinite loop

Question 9

How many times does the loop execute in the following code fragment?
Int i;
For (i = 0; i < 50; i = i + 4)
{
System.out.println(i);
}

A) 11
B) 12
C) 13
D) 14

Question 10

Which of the following loops executes the statements inside the loop before checking the condition?

A) for
B) while
C) do
D) do-for

Question 11

Which loop does not check a condition at the beginning of the loop?
I) The do loop
II) The while loop
III) The for loop

A) I and II
B) I and III
C) I only
D) III only

Question 12

What is the output of the code snippet given below?
Int i = 0;
While (i != 9)
{
System.out.println("" + i);
I = i + 2;
}

A) No output
B) 0 2 4 6 8
C) 10 12 14 16 18 …. (infinite loop)
D) 0 2 4 6 8 10 12 14 …. (infinite loop)

Question 13

How many times will the output line be printed in the following code snippet?
For (int num2 = 1; num2 <= 3; num2++)
{
For (int num1 = 0; num1 <= 2; num1++)
{
System.out.println("" + num2 + " " + num1);
}
}

A) 3 times
B) 6 times
C) 9 times
D) 12 times

Question 14

How many times does the following code fragment display "Hi"?
Int i = 10;
While (i >= 0)
{
System.out.println("Hi");
I--;
}

A) 9 times
B) 10 times
C) 11 times
D) 12 times

Question 15

What are the values of i and j after the following code fragment runs?
Int i = 60;
Int j = 50;
Int count = 0;
While (count < 5)
{
I = i + i;
I = i + 1;
J = j - 1;
J = j - j;
Count++;
}
System.out.println("i=" + i + ", j=" + j);

A) i = 1951, j = 0
B) i = 1951, j = 45
C) i = 65, j = 1
D) i = 65, j = 45

Question 16

What is the output of the code snippet given below?
Int i;
Int j = 0;
For (i = 0; i < 5; i++)
{
If (i % 2 == 0)
{
I = i + 2;
J++;
}
Else
{
I++;
J = j + 2;
}
J++;
}
System.out.println("i=" + i + ", j=" + j);

A) i=7, j =7
B) i =7, j =6
C) i =6, j =7
D) i =5, j =5

Question 17

How many times does the following code snippet display "Loop Execution"?
For (int i = 0; i < 10; i++);
{
System.out.println("Loop Execution");
}

A) Ten times.
B) The code snippet does not run because of a compile error.
C) Infinite loop.
D) Only one time.

Question 18

How many times does the code snippet given below display "Loop Execution"?
Int i = 1;
While (i != 10)
{
System.out.println ("Loop Execution");
I++;
}

A) Infinite times
B) 8 times
C) 9 times
D) 10 times

Question 19

What is the sentinel value in the following code snippet?
Public static void main(String[] args)
{
Int age = 0;
Int sumOfAges = 0;
Int stop = 1;
Scanner reader = new Scanner(System.in);
System.out.println("Enter an age (-1 to stop): ");
Age = reader.nextInt();
While (age != -1)
{
SumOfAges = sumOfAges + age;
System.out.println("Enter an age (-1 to stop): ");
Age = reader.nextInt();
}
System.out.println("Sum of ages " + sumOfAges);
Return 0;
}

A) 0
B) 1
C) 2
D) -1

Question 20

What is the first and last value of i to be displayed by the following code snippet?
Int n = 20;
For (int i = 0; i <= n; i++)
{
For (int j = 0; j <= i; j++)
{
System.out.println("" + i);
}
}

A) 0 and 20
B) 1 and 20
C) 0 and 19
D) 1 and 19

Question 21

What will be the output of the following code snippet?
Boolean token = false;
Do
{
System.out.println("Hello");
}
While (token);

A) "Hello" will be displayed infinite times.
B) No output because of compilation error.
C) No output after successful compilation.
D) "Hello" will be displayed only once.

Question 22

What is the output of the code snippet given below?
String s = "12345";
Int i = 1;
Do
{
If (i > 1)
{
System.out.print);
}
}
While (i < 5);

A) No output
B) No output (infinite loop)
C) 12345
D) 2345

Question 23

How many times does the following loop execute?
Int upperCaseLetters = 0;
String str = "abcdEfghI";
Boolean found = false;
For (int i = 0; i < str.length() && !found; i++)
{
Char ch = str.charAt(i);
If (Character.isUpperCase(ch))
{
Found = true;
}
}

A) 9 times
B) 8 times
C) 5 times
D) 1 time

Question 24

What is the result when the following code is run?
Double x = 1;
Double y = 1;
Int i = 0;
Do
{
Y = x / 2;
X = x + y;
I = i + 1;
}
While (x < 2.5);
System.out.print(i + " ");

A) 1
B) 2
C) 3
D) 4

Question 25

Which of the following is the correct code snippet for throwing a pair of dice to get a sum of the numbers on two dice between 2 and 12 with different probabilities?

A) (int) (Math.random() * 6 + 1)
B) (int) (Math.random() * 12 + 1)
C) (int) (Math.random() * 6 + 1) + (int) (Math.random() * 6 + 1)
D) (int) (Math.random() * 12 - 2)

Question 26

What is the output of the following code snippet?
Int i = 1;
While (i <= 10)
{
System.out.println("Inside the while loop");
I = i + 10;
}

A) No output because of compilation error.
B) "Inside the while loop" will be displayed 10 times.
C) No output after successful compilation.
D) "Inside the while loop" will be displayed only once.

Question 27

Given the following code snippet, what should we change to have 26 alphabet characters in the string str?
String str = "";
For (char c = 'A'; c < 'Z'; c++)
{
Str = str + c;
}

A) int c = 'A'
B) str = c + str;
C) c <= 'Z'
D) Must change to use a do loop

Question 28

Which of the following activities can be simulated using a computer?
I) Waiting time in a line at a restaurant
II) Tossing a coin
III) Shuffling cards for a card game

A) I only
B) II only
C) I and II only
D) I, II, and III

Question 29

What will be the range of the random numbers generated by the following code snippet?
Int r1 = (int) (Math.random() * 50) + 1;

A) Between 1 and 49
B) Between 0 and 50
C) Between 0 and 49
D) Between 1 and 50

Question 30

What is the output of the following code snippet?
Int i = 1;
While (i < 20)
{
System.out.print(i + " ");
I = i + 2;
If (i == 15)
{
I = 19;
}
}

A) 1 3 5 7 9 11 13 15 17 19
B) 1 3 5 7 9 11 13 19
C) 1 3 5 7 9 11 13 15 17
D) 1 3 5 7 9 11 13 17 19

Question 31

What is the output of the code fragment given below?
Int i = 0;
Int j = 0;
While (i < 125)
{
I = i + 2;
J++;
}
System.out.println(j);

A) 0
B) 62
C) 63
D) The code fragment displays no output because it does not compile.

Question 32

What is the data type of the number generated by the Math.random() function?

A) double
B) float
C) int
D) String

Question 33

What is the output of the code snippet given below?
String s = "abcde";
Int i = 1;
Do
{
If (i > 1)
{
System.out.print);
}
}
While (i < 5);

A) No output
B) No output (infinite loop)
C) abcde
D) bcde

Question 34

What is the output of the code snippet given below?
String s = "abcde";
Int i = 1;
While (i < 5)
{
System.out.print);
I++;
}

A) No output
B) abcd
C) abcde
D) bcde

Question 35

In the following code snippet, when does the execution of the program switch from the inner loop to the outer loop?
Int i;
Int j;
For (i = 0; i <= 9; i++)
{
For (j = 1; j < 5; j++)
{
System.out.println("Hello");
If (j == 2)
{
J = 6;
}
}
}

A) When the value of j becomes 6
B) When the program executes completely
C) When the condition for the outer loop is met
D) When the value of i is incremented

Question 36

What will be the final output of the following code snippet when a user enters input values in the order 10, 20, 30, 40, 50, and -1?
Public static void main(String[] args)
{
Double sum = 0;
Int count = 0;
Double salary = 0;
Double average = 0;
Scanner reader = new Scanner(System.in);
System.out.println("Enter salaries (-1 to stop): ");
While (salary != -1)
{
Salary = reader.nextInt();
If (salary != -1)
{
Sum = sum + salary;
Count++;
}
}
If (count > 0)
{
Average = sum / count;
System.out.println("The Average Salary: " + average);
}
Else
{
System.out.println ("No data!");
}
Return 0;
}

A) The Average Salary: 0
B) The Average Salary: 30
C) The Average Salary: 24.83333
D) There will be no output as the code snippet will not compile.

Question 37

What is the output of the code snippet given below?
String s = "12345";
Int i = 1;
While (i < 5)
{
System.out.print);
I++;
}

A) No output
B) 1234
C) 12345
D) 2345

Question 38

What will be the output of the following code snippet?
Boolean token = false;
While (token)
{
System.out.println("Hello");
}

A) "Hello" will be displayed infinite times.
B) No output because of compilation error.
C) No output after successful compilation.
D) "Hello" will be displayed only once.

Question 39

How many times does the code snippet below display "Hello"?
Int i = 0;
While (i != 15)
{
System.out.println("Hello");
I++;
}

A) Infinite times
B) 14 times
C) 15 times
D) 16 times

Question 40

What is the outcome of the following code snippet?
Boolean val1 = true;
Boolean val2 = false;
While (val1)
{
If (val1)
{
System.out.println("Hello");
}
Val1 = val2;
}

A) No output will be displayed because of compilation error.
B) "Hello" will be displayed only once.
C) "Hello" will be displayed infinite times.
D) No output will be displayed even after successful compilation of the code snippet.

Question 41

Which of the following loops executes exactly 10 times?

A) for (int i = 0; i <= 10; i++) { }
B) int i = 0;
Boolean found = false;
Do
{
I++;
If (i % 10 == 0)
{
Found = true;
}
}
While (i < 10 && !found);
C) int i = 0;
While (i <= 10)
{
I++;
}
D) for (int i = 1; i <= 10; i++)

Question 42

What are the values of i and j after the following code snippet is run?
Int i = 10;
Int j = 20;
Int count = 0;
While (count < 5)
{
I = i + i;
I = i + 1;
J = j - 1;
J = j - j;
Count++;
}
System.out.println("i = " + i + ", j = " + j);

A) i = 45, j = 1
B) i = 351, j = 0
C) i = 351, j = 2
D) i = 1311, j = 35

Question 43

What is the output of this loop?
Int i = 0;
Boolean found;
While (i < 20 && !found)
{
Int sum = i * 2 + i * 3;
System.out.print(sum + " ");
If (sum > 50)
{
Found = true;
}
I++;
}

A) 0 5 10 15 20 25 30 35 40 45 50 55
B) 0
C) No output, compilation error
D) 0 5 10

Question 44

What is the last output line of the code snippet given below?
Int i = 0;
While (i < 10)
{
Int num = 1;
For (int j = i; j > 1; j--)
{
System.out.print(j + " ");
Num = num * 2;
}
System.out.println("***");
I++;
}

A) 3 2 ***
B) 9 8 7 6 5 4 3 2 ***
C) 8 7 6 5 4 3 2 ***
D) 2 ***

Question 45

What is the output of the following code snippet?
Double a = 2;
Int n = 16;
Double r = 1;
Double b = a;
Int i = n;
While (i > 0)
{
If (i % 2 == 0) // n is even
{
B = b * b;
I = i / 2;
}
Else
{
R = r * b;
I--;
}
}
System.out.println("r = " + r);

A) 16.0
B) 128.0
C) 4096.0
D) 65536.0

Question 46

What is the output of the code snippet given below?
String s = "abcdefghijkl";
Int i = 1;
Do
{
If (i > 2)
{
System.out.print(s.substring (1, i));
}
I++;
}
While (i < 5);

A) abcd
B) bcde
C) bcbcd
D) cdef

Question 47

What is the output of the following code fragment?
Int i = 1;
Int sum = 0;
While (i <= 15)
{
Sum = sum + i;
I++;
}
System.out.println("The value of sum is " + sum);

A) The value of sum is 0
B) The value of sum is 105
C) The value of sum is 120
D) The value of sum is 136

Question 48

What does the following code snippet display?
Char ch1 = '\ u0000';
Char ch2 = '\ uffff';
For (int i = 0; i < 1000; i++)
{
If (i % 50 == 0)
{
System.out.println();
}
System.out.print((char)(ch1 + Math.random() * (ch2 - ch1 + 1)));
}

A) It displays random Unicode characters.
B) It displays random ASCII characters.
C) Nothing because it has compilation error.
D) It displays the hexadecimal characters between '0' and 'F'.

Question 49

What does the following code do?
Int sum = 0;
Final int count = 1000;
For (int i = 1; i <= count; i++)
{
Sum = sum + (int) (Math.random() * 101);
}
System.out.println(sum / count);

A) It simulates the outcome of throwing a coin.
B) It calculates the average of 1000 random numbers between 0 and 100.
C) It performs Monte Carlo simulation of fluid dynamics.
D) It calculates the average of 1000 random numbers between 1 and 101.

Question 50

Which of the following for loops is illegal?

A) for (int i = 0; ; ) { }
B) for (int i = 0) { }
C) for (int i = 0, k = 1; ; i++) { }
D) for ( ; ; )

Question 51

How many times does the following loop execute?
Double d;
Double x = Math.random() * 100;
Do
{
D = Math.sqrt(x) * Math.sqrt(x) - x;
System.out.println(d);
X = Math.random() * 10001;
}
While (d != 0);

A) Exactly once
B) Exactly twice
C) Can't be determined
D) Always infinite loop

Question 52

In the __________ loop header, you can include multiple update expressions, separated by commas, but it is not recommended.

A) do
B) while
C) for
D) do

Question 53

What is the output of the following code snippet?
Int counter = 1;
For (double i = 0.01; i <= 1.0; i = i + 0.01)
{
Counter++;
}
System.out.println(counter);

A) 100
B) 49.50
C) 60.5
D) 10

Question 54

Choose the loop that is equivalent to this loop.
Int n = 1;
Double x = 0;
Double s;
Do
{
S = 1.0 / (n * n);
X = x + s;
N++;
}
While (s > 0.01);

A) double x = 0;
Double s = 1;
For (int k = 1; s > 0.01; k++)
{
S = 1.0 / (k * k);
X = x + s;
}
B) double x = 0;
Double s = 1;
For (int k = 1; k < 100; k++)
{
S = 1.0 / (k * k);
X = x + s;
}
C) double x = 0;
Double s = 1;
Int k = 10;
While (s > 0.01)
{
S = 1.0 / (k * k);
X = x + s;
K++;
}
D) double x = 0;
Double s = 10;
Int k = 1;
While (s > 0.01)
{
S = 1.0 / (k * k);
X = x + s;
K++;

Question 55

Insert a statement that will correctly terminate this loop when the end of input is reached.
Boolean done = false;
While (!done)
{
String input = in.next();
If (input.equalsIgnoreCase("Q"))
{
__________
}
Else
{
Double x = Double.parseDouble(input);
Data.add(x);
}
}

A) stop;
B) done = 1;
C) exit;
D) done = true;

Question 56

What is the output of the following code snippet?
Int f1 = 0;
Int f2 = 1;
Int fRes;
System.out.print(f1 + " ");
System.out.print(f2 + " ");
For (int i = 1; i < 10; i++)
{
FRes = f1 + f2;
System.out.print(fRes + " ");
F1 = f2;
F2 = fRes;
}
System.out.println();

A) 0 1 5 7 9 11 13 15 17 19
B) 0 1 1 2 3 5 8 13 21 34
C) 0 1 4 6 8 10 12 14 16 18
D) 0 1 6 7 9 12 14 17 19 21

Question 57

What values does counter variable i assume when this loop executes?
For (int i = 20; i >= 2; i = i - 6)
{
System.out.print(i + ",");
}

A) 20, 14, 8, 2
B) 20, 14, 8, 2, -4
C) 20, 14, 8
D) 14, 8, 2

Question 58

What is the output of this code snippet if the user enters the numbers 1 2 3 4 -1 5?
Double total = 0;
Boolean hasValidNumber = true;
Scanner in = new Scanner(System.in);
While (in.hasNextDouble() && hasValidNumber)
{
Double input = in.nextDouble();
If (input < 0)
{
HasValidNumber = false;
}
Else
{
Total = total + input;
}
}
System.out.println(total);

A) 15.0
B) 14.0
C) 12.0
D) 10.0

Question 59

What does the following code snippet print?
Int a = 120;
Int b = 90;
Int n1 = Math.abs(a);
Int n2 = Math.abs(b);
Int result = 1;
For (int k = 1; k <= n1 && k <= n2; k++)
{
If (n1 % k == 0 && n2 % k == 0)
{
Result = k;
}
}
System.out.println(result);

A) 10
B) 20
C) 30
D) 40

Question 60

Which of the following is considered a loop with a bound that could be problematic?

A) for (i = 1; i != n; i++)
B) for (years = n; years < 0; years--)
C) for (i = 1; i <= n; i++)
D) for (int i = 1; i <= 10; i++)

Question 61

Which of the following loop(s) could possibly not enter the loop body at all?
I) for loop
II) while loop
III) do loop

A) I only
B) I and II only
C) II and III only
D) I and III only

Question 62

How many times does the following loop execute?
Int i = 0;
Boolean found = false;
While (i < 100 && !found)
{
I++;
System.out.print(i + " ");
Int j = i * i;
If ((i * i * i) % j == j)
{
Found = true;
}
}

A) 10 times
B) 20 times
C) 100 times
D) An infinite number of times

Question 63

Which statement about storyboards is true?

A) A storyboard can help prevent potential user confusion early in the design process.
B) Storyboards are used primarily to understand how implemented programs work.
C) The storyboard helps to train users about how to use software.
D) Storyboards have no relationship to the structure of an actual working program.

Question 64

What changes do you need to make in the following code snippet to display "Let us learn Java" exactly 10 times?
Int i = 0;
While (i <= 10)
{
System.out.println("Let us learn Java");
I++;
}

A) while (i < 9)
B) while (i < 11)
C) while (i < 12)
D) int i = 1;

Question 65

Which of the following statements expresses why the following code is considered bad form?
For (rate = 5; years-- > 0; System.out.println(balance))
) . .
I) Unrelated expressions in loop header
II) Doesn't match expected for loop idiom
III) Loop iteration is not clear

A) II and III only
B) I and II only
C) I and III only
D) I, II, and III

Question 66

Which of the following code snippets displays the output exactly 10 times?

A) int i = 0;
While (i < 10);
{
System.out.println("This is example 1.");
I++;
}
B) int i = 0;
While (i < 10)
{
System.out.println("This is example 2.");
I++;
}
C) int i = 0;
While (i < 10)
{
System.out.println("This is example 3.");
}
D) int i = 1;
While (i < 10)
{
System.out.println("This is example 4.");
I++;

Question 67

Which of the following is considered a loop with a problematic condition?

A) for(i = 1; i != n; i++)
B) for (years = n; years > 0; years++)
C) for(i = 1; i <= n; i++)
D) for (int i = 20; i >= 10; i--)

Question 68

Which of the following is correct for simulating the toss of a pair of coins to get 0 (head) or 1 (tail) with different probabilities?

A) (int) (Math.random() * 0 + 1)
B) (int) (Math.random() * 1 + 1)
C) (int) (Math.random() * 2)
D) (int) (Math.random() * 2) + (int) (Math.random() * 2)

Question 69

What is the output of the following loop?
Int s = 1;
Int n = 1;
Do
{
S = s + n;
N++;
}
While (s < 10 * n);
System.out.println(s);

A) 211
B) 210
C) 120
D) 123

Question 70

Which code snippet produces the sum of the first n even numbers? (0 is not considered an even number.)

A) int sum = 0;
For (int i = 1; i <= n; i++)
{
If (i % 2 == 0)
{
Sum = sum + i;
}
}
B) int sum = 0;
For (int i = 1; i <= n; i++)
{
Sum = sum + i * 2;
}
C) int sum = 0;
For (int i = 0; i < n; i++)
{
If (i % 2 == 0)
{
Sum = sum + i;
}
}
D) int sum;
For (int i = 1; i <= n; i++)
{
Sum = sum + i * 2;

Question 71

Suppose that a program asks a user to enter multiple integers, either positive or negative, to do some calculation. The data entry will stop when the user enters a certain value to indicate the end of the data. What value should the code use as the sentinel?

A) 0
B) -1
C) 999
D) An alphabetic character

Question 72

When hand-tracing the loop in the code snippet below, which variables are important to evaluate?
Int i = 10;
Int j = 5;
Int k = -10;
Int sum = 0;
While (i > 0)
{
Sum = sum + i + j;
I--;
System.out.println("Iteration: " + i);
}

A) The variables i and j
B) The variables i and sum
C) The variables i, j, and k
D) The variables j and k

Question 73

What will be the result of running the following code fragment?
Int year = 0;
Double rate = 5;
Double principal = 10000;
Double interest = 0;
While (year < 10)
{
Interest = (principal * year * rate) / 100;
System.out.println("Interest " + interest);
}

A) The code fragment will display the interest calculated for nine years.
B) The code fragment will continue to display the calculated interest forever because the loop will never end.
C) The code fragment will not display the calculated interest and halt abruptly.
D) The code fragment will not display any output because it will not compile.

Question 74

What is the output of this code snippet?
String str = "ABCabc";
Char ch;
Int i = 0;
While (i < str.length())
{
Ch = str.charAt(i);
If (Character.isLowerCase(ch))
{
System.out.print(i + " ");
}
Else
{
I++;
}
}

A) 3 4 5
B) 3
C) 3 3 3 3 3 ... (infinite loop)
D) 0 1 2

Question 75

What is the output of the following code snippet?
Int i = 1;
While (i != 9)
{
System.out.print(i + " ");
I++;
If (i == 9)
{
System.out.println("End");
}
}

A) 1 End
B) 1 End (infinite loop)
C) 1 2 3 4 5 6 7 8 End
D) 1 2 3 4 5 6 7 8 End (infinite loop)

Question 76

Which of the following loop(s) should be used when you need to ask a user to enter one data item and repeat the prompt if the data is invalid?
I) for loop
II) while loop
III) do loop

A) I only
B) I and II
C) III only
D) II only

Question 77

Which of the loop(s) test the condition after the loop body executes?
I) for loop
II) while loop
III) do loop

A) I only
B) II only
C) III only
D) II and III

Question 78

How do you fix this code snippet to make it print out the sum when the user enters Q?
System.out.print("Enter a value, Q to quit: ");
Double sum = 0;
Scanner in = new Scanner(System.in);
Boolean hasData = true;
Do
{
Double value = in.nextDouble();
Sum = sum + value;
System.out.print("Enter a value, Q to quit: ");
}
While (in.hasNext());
System.out.println("sum " + sum);

A) while (in.hasData());
B) while (!in.hasEnded());
C) while (in.hasNextDouble());
D) while (hasData);

Question 79

How many times does the following loop execute?
For (double d = 1; d != 10; d++)
{
D = d / 3;
System.out.print(d + " ");
}

A) 10
B) 9
C) 8
D) An infinite number of times

Question 80

Suppose that the chance to hit the jackpot in a lottery is one in one million. Which of the following code snippets simulates that random number?

A) (long) (Math.random() * 1000000 + 1)
B) (long) (Math.random() * 100000 + 1)
C) (long) (Math.random() * 9999990 + 1)
D) (long) (Math.random() * 1000001 + 1)