Question 1

What is the output of the code snippet given below?

Accepted Answer

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

Question 2

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

Accepted Answer

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

Question 3

What is the output of the code below?

Accepted Answer

A) 0 1 3 6 
B) 0 1 4 10 
C) 0 2 5 9 
D) 0 2 7 16 
A) 0 1 3 6 
B) 0 1 4 10 
C) 0 2 5 9 
D) 0 2 7 16

Question 4

How many times does the following loop run?

Accepted Answer

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

Question 5

What is the output of the following code snippet?

Accepted Answer

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

Question 6

How many times does the following code snippet display "Loop Execution"?

Accepted Answer

A) ten times 
B) The code snippet does not run because of a compile error. 
C) infinite loop 
D) only one time 
A) ten times 
B) The code snippet does not run because of a compile error. 
C) infinite loop 
D) only one time

Question 7

Which statement is correct about the execution of the loop in the following code fragment?

Accepted Answer

A) The loop will execute only when 0 is entered. 
B) The execution of the loop is independent of user input. 
C) The program prints the count of positive inputs. 
D) The loop will execute at least once even if the user has entered the sentinel value. 
A) The loop will execute only when 0 is entered. 
B) The execution of the loop is independent of user input. 
C) The program prints the count of positive inputs. 
D) The loop will execute at least once even if the user has entered the sentinel value.

Question 8

What is the outcome of the following code snippet?

Accepted Answer

A) No output will be displayed because of a 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. 
A) No output will be displayed because of a 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 9

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

Accepted Answer

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

Question 10

What will be the output of the following code snippet?

Accepted Answer

A) There will be no output. 
B) Hello will be displayed 10 times. 
C) Hello will be displayed 9 times. 
D) Hello will be displayed infinite times. 
A) There will be no output. 
B) Hello will be displayed 10 times. 
C) Hello will be displayed 9 times. 
D) Hello will be displayed infinite times.

Question 11

What is the output of this code snippet?

Accepted Answer

A)  2 4 7 11 16 22 
B)  1 3 5 7 9 
C)  2 3 5 6 7 
D)  2 4 6 8 
A)  2 4 7 11 16 22 
B)  1 3 5 7 9 
C)  2 3 5 6 7 
D)  2 4 6 8

Question 12

What will be the output of the following code snippet?

Accepted Answer

A) Hello will be displayed infinitely many times. 
B) There will be no output as the code snippet will not compile. 
C) There will be no output after successful compilation. 
D) Hello will be displayed only once. 
A) Hello will be displayed infinitely many times. 
B) There will be no output as the code snippet will not compile. 
C) There will be no output after successful compilation. 
D) Hello will be displayed only once.

Question 13

What is the sentinel value in the following code snippet?

Accepted Answer

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

Question 14

What is the output of the code fragment given below?

Accepted Answer

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

Question 15

When designing storyboards, it is a good idea to use different colors to

Accepted Answer

A) make it easy to distinguish between user input and program output. 
B) match the colors your program will use when it is finally designed. 
C) emphasize the difference between numbers and words. 
D) draw lines to divide up panels into different regions. 
A) make it easy to distinguish between user input and program output. 
B) match the colors your program will use when it is finally designed. 
C) emphasize the difference between numbers and words. 
D) draw lines to divide up panels into different regions.

Question 16

The process of hand-tracing code is valuable because

Accepted Answer

A) it is usually faster than just running the code. 
B) it is the best way to design an algorithm. 
C) you must already have a working program in order to do it. 
D) it gives valuable insight that you do not get by running the code. 
A) it is usually faster than just running the code. 
B) it is the best way to design an algorithm. 
C) you must already have a working program in order to do it. 
D) it gives valuable insight that you do not get by running the code.

Question 17

Storyboards are a helpful part of the design process because the storyboard develops

Accepted Answer

A) a pseudocode description of the algorithm being designed. 
B) the mathematical formulas required for computing a correct answer. 
C) the information needed to solve the problem, and how to present that information. 
D) the amount of time and space needed to find a solution. 
A) a pseudocode description of the algorithm being designed. 
B) the mathematical formulas required for computing a correct answer. 
C) the information needed to solve the problem, and how to present that information. 
D) the amount of time and space needed to find a solution.

Question 18

Which statement, inserted at the indicated blank line, will correctly terminate this loop when the end of input is reached (detected when the user enters the letter Q)?

Accepted Answer

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

Question 19

What is the purpose of the following loop?

Accepted Answer

A) finds the position of the first digit (0 through 9) in a string, starting from the left 
B) finds the position of the first digit (0 through 9) in a string, starting from the right 
C) finds the position of the first uppercase character in a string, starting from the left 
D) finds the position of the first uppercase character in a string, starting from the right 
A) finds the position of the first digit (0 through 9) in a string, starting from the left 
B) finds the position of the first digit (0 through 9) in a string, starting from the right 
C) finds the position of the first uppercase character in a string, starting from the left 
D) finds the position of the first uppercase character in a string, starting from the right

Question 20

What is the output of the following code?

Accepted Answer

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

Exam 6: Loops

What is the output of the code snippet given below?

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

What is the output of the code below?

How many times does the following loop run?

What is the output of the following code snippet?

How many times does the following code snippet display "Loop Execution"?

Which statement is correct about the execution of the loop in the following code fragment?

What is the outcome of the following code snippet?

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

What will be the output of the following code snippet?

What is the output of this code snippet?

What will be the output of the following code snippet?

What is the sentinel value in the following code snippet?

What is the output of the code fragment given below?

When designing storyboards, it is a good idea to use different colors to

The process of hand-tracing code is valuable because

Storyboards are a helpful part of the design process because the storyboard develops

Which statement, inserted at the indicated blank line, will correctly terminate this loop when the end of input is reached (detected when the user enters the letter Q)?

What is the purpose of the following loop?

What is the output of the following code?

Introduction

Using Objects

Implementing Classes

Fundamental Data Types

Decisions

Arrays and Array Lists

Designing Classes

Inheritance

Interfaces

Input/Output and Exception Handling

Object-Oriented Design

Recursion

Sorting and Searching

The Java Collections Framework

Basic Data Structures

Tree Structures

Generic Classes

Stream Processing

Graphical User Interfaces

Advanced Input/Output

Multithreading

Internet Networking

Relational Databases

XML

Filters