Question

please help me on 12

106 Java Concepts Advanced Placement CS Study Guide 3 12. Consider the following code segment. int count = 0; for (int x = 0; x< 3; x++) for (int y = x; y < 3; y++) for (int z - y: z < 3; 2++) count++; What is the value of count after the code segment is executed? a 81 b. 27 JOHNNNN mshe thote c. 10x d. 9 e, 6 13. Each segment of code below correctly calculates the sum of the integers from 1 to n inclusive and stores this value in the integer variable sum. I int sum = 0; for (int i = 1; i <= n; i++) II. int sum = 0; int i = n; while (i > 0) sum + i; III. Int sum - (n + 1) + n/2; Informally, execution efficiency can be viewed as the number of operations performed in a segment of code. For large values of n, which of the following statements is true about the execution efficiency of the above code segments? a l is more efficient than I and III because it sums the numbers in increasing numeric order. b. It is more efficient than I and III because it sums the numbers beginning with the largest value. a III is more efficient than I and II because there are fewer operations d. I and II are more efficient than III because they are easier to understand. e. I. II and III always operate with the same execution efficiency Questions 14 and 15 refer to the following code segment.

Answer 1

Trace:

When x=0, y=0, z=0, the value of count is 1
When x=0, y=0, z=1, the value of count is 2
When x=0, y=0, z=2, the value of count is 3
When x=0, y=1, z=1, the value of count is 4
When x=0, y=1, z=2, the value of count is 5
When x=0, y=2, z=2, the value of count is 6
When x=1, y=1, z=1, the value of count is 7
When x=1, y=1, z=2, the value of count is 8
When x=1, y=2, z=2, the value of count is 9
When x=2, y=2, z=2, the value of count is 10

Answer:

So, the final value of count is 10