1.Consider the following two code segments. In both, assume that n is an integer variable that has been declared and initialized. Segment 1 int sum = 1; int i; for (i = 2; i < n; i++) { sum += i; } System.out.println(sum); Segment 2 int sum = 1; int i = 2; while (i <= n) { sum += i; i++; } System.out.println(sum); For which integer values of n do these code segments print the same result?

A.Only n>=1

B. Only n<=1

C. Only n==1

D. These segments never print the same result.

E. Any integer n produces the same result.

2. Given the following code: int i = 100; int j = 10; while (i > 0) { i = i / j; j = 1 + j % 5; } What is the value of i after this code executes?

A. 0

B. 1

C. 2

D. 5

E. 10

3.The following code is intended to calculate the sum of the first five positive odd integers starting at 1. int sum = 0; int k; for (k = 1; k <= 10; k += 2) { sum += k; } What is wrong with this code segment?

A.The segment calculates the sum of the first four positive odd integers.

B.The segment calculates the sum of the first six positive odd integers.

C. The segment calculates the sum of the first seven positive odd integers.

D. The variable sum is incorrectly initialized. The segment would work correctly if sum was initialized to 1.

E . The segment works as intended.

4. The following code is designed to set index to the location of the first occurrence of target in the array a, and to set index to -1 if target is not found in a. index = 0; while (a[index] != target) { index++; } if (a[index] != target) { index = -1; } Which of the following describes the condition under which this program segment will fail to perform the task described?

A.Whenever target is the first element of the array

B.Whenever target is the last element of the array

C.Whenever target is not present in the array

D.Whenever target is -1

E. Whenever target = a[target]

5. Suppose the following array is declared: int[ ] grades = {88, 92, 95, 83}; What is the value of grades[grades[0] / 22]?

A. An ArrayIndexOutOfBoundsException occurs

B. 4

C. 88

D. 92

E. 95

6. !((x > y) || (y <= 0)) is equivalent to which of the following expressions?

1. (x > y) || !(y <= 0)
2. !(x > y) && !(y <= 0)
3. (x <= y) && (y > 0)

A. I only

B. II only

C. III only

D. I and III only

E. II and III only

7. Given the following code: if (n == 2) { k -= 2; } else if (n == 3) { k -= 3; } can be rewritten as if (< condition >) { < assignment statement >; } where < condition > and < assignment statement > are chosen so that the rewritten code performs the same task as the original code. Assume that both n and k are integer variables. Which of the following could be used as < condition >?

1. (n == 2) || (n == 3)
2. (n == 2) && (n == 3)
3. (n >= 2) && (n <= 3)

A. I only

B. II only

C. III only

D. I and III only

E. II and III only

8. Which of the following statements is false?

A. For-each loops (or enhanced for loops) can be used to iterate over arrays.

B. For-each loops can only be used to iterate over all array elements.

C.Traditional for loops can be used to iterate over all or some array elements.

D. For-each loops can be used to iterate over all array elements in reverse order.

E.For-each loops can be replaced with either for loops or while loops

9. When is the following expression true? !(!a || b) || (!a && b)

A. If and only if a and b have different values

B. If and only if a and b have the same value

C.If and only if both a and b are true

D.If and only if both a and b are false

E.The expression is never true