Question 1

Functions iter_swap and swap_ranges are similar in that both:

Accepted Answer

A)  Swap a range of elements. 
B)  Take two arguments. 
C)  Take forward iterators as arguments. 
D)  Can only swap elements within the same array or container. 
A)  Swap a range of elements. 
B)  Take two arguments. 
C)  Take forward iterators as arguments. 
D)  Can only swap elements within the same array or container. C

Question 2

The algorithms in the Standard Library:

Accepted Answer

A)  Use virtual function calls. 
B)  Are implemented as member functions of the container classes. 
C)  Do not depend on the implementation details of the containers on which they operate. 
D)  Are not as efficient as the algorithms presented in most textbooks. 
A)  Use virtual function calls. 
B)  Are implemented as member functions of the container classes. 
C)  Do not depend on the implementation details of the containers on which they operate. 
D)  Are not as efficient as the algorithms presented in most textbooks. C

Question 3

Which of the following is not a category of the Standard Library algorithms?

Accepted Answer

A)  mutating sequence algorithms 
B)  sorting and related algorithms 
C)  generalized numeric operations 
D)  All of the above are categories of the Standard Library Algorithms. 
A)  mutating sequence algorithms 
B)  sorting and related algorithms 
C)  generalized numeric operations 
D)  All of the above are categories of the Standard Library Algorithms. D

Question 4

Function mismatch returns:

Accepted Answer

A)  The position number where the two specified sequences do not match. 
B)  A pair containing the two elements in the specified sequences that do not match. 
C)  A pair containing two iterators pointing to the two locations in the specified sequences that do not match. 
D)  A bool indicating whether the two specified sequences do not match. 
A)  The position number where the two specified sequences do not match. 
B)  A pair containing the two elements in the specified sequences that do not match. 
C)  A pair containing two iterators pointing to the two locations in the specified sequences that do not match. 
D)  A bool indicating whether the two specified sequences do not match.

Question 5

Which of the following is not a mathematical algorithm included in the Standard Library?

Accepted Answer

A)  min_element 
B)  copy 
C)  transform 
D)  accumulate 
A)  min_element 
B)  copy 
C)  transform 
D)  accumulate

Question 6

A lambda function can capture local variables ________ and manipulate them inside the lambda's body.

Accepted Answer

A)  by value. 
B)  by reference. 
C)  by value or by reference. 
D)  None of the above. 
A)  by value. 
B)  by reference. 
C)  by value or by reference. 
D)  None of the above.

Question 7

The easiest way to search through a list of names and output the first one that begins with a vowel would be to use function:

Accepted Answer

A)  find 
B)  find_if 
C)  sort 
D)  binary_search 
A)  find 
B)  find_if 
C)  sort 
D)  binary_search

Question 8

If v1 is a vector containing some number of int elements sorted in ascending order, after these statements execute: std::vector results1; Std::vector results2; Std::unique_copy(v1.begin(), v1.end(), std::back_inserter(results1)); Std::reverse_copy(v1.begin(), v1.end(), std::back_inserter(results2)); Which of the following could be true?

Accepted Answer

A)  results1 contains more elements than results2. 
B)  The first element in results1 matches the last element in results2. 
C)  results1 is empty but results2 is not. 
D)  None of the above. 
A)  results1 contains more elements than results2. 
B)  The first element in results1 matches the last element in results2. 
C)  results1 is empty but results2 is not. 
D)  None of the above.

Question 9

Lambdas return types ________.

Accepted Answer

A)  cannot be inferred. 
B)  can be inferred automatically if the body is a single statement of the form return expression; otherwise, the return type is void by default. 
C)  are always void. 
D)  None of the above. 
A)  cannot be inferred. 
B)  can be inferred automatically if the body is a single statement of the form return expression; otherwise, the return type is void by default. 
C)  are always void. 
D)  None of the above.

Question 10

Which of the following function calls would not return the value that is its first argument?

Accepted Answer

A)  std::min(3, 23) 
B)  std::min('N', 'P') 
C)  std::max(17, 16) 
D)  std::max('d', 'k') 
A)  std::min(3, 23) 
B)  std::min('N', 'P') 
C)  std::max(17, 16) 
D)  std::max('d', 'k')

Question 11

The order of the arguments passed to function replace_copy_if must be:

Accepted Answer

A)  OutputIterator, InputIterator, ReplacementValue, PredicateFunction. 
B)  InputIterator, OutputIterator, PredicateFunction, ReplacementValue. 
C)  OutputIterator, InputIterator, InputIterator, ReplacementValue, PredicateFunction. 
D)  InputIterator, InputIterator, OutputIterator, PredicateFunction, ReplacementValue. 
A)  OutputIterator, InputIterator, ReplacementValue, PredicateFunction. 
B)  InputIterator, OutputIterator, PredicateFunction, ReplacementValue. 
C)  OutputIterator, InputIterator, InputIterator, ReplacementValue, PredicateFunction. 
D)  InputIterator, InputIterator, OutputIterator, PredicateFunction, ReplacementValue.

Question 12

Which of the following is a valid generator function prototype for use with generate or generate_n on a vector<char>?

Accepted Answer

A)  void nextLetter(); 
B)  char nextLetter(); 
C)  char nextLetter(char); 
D)  char nextLetter(int); 
A)  void nextLetter(); 
B)  char nextLetter(); 
C)  char nextLetter(char); 
D)  char nextLetter(int);

Question 13

Which algorithm cannot take a predicate function as an argument?

Accepted Answer

A)  find 
B)  find_if 
C)  sort 
D)  binary_search 
A)  find 
B)  find_if 
C)  sort 
D)  binary_search

Question 14

Function objects have their functions called by using:

Accepted Answer

A)  The dot operator (.) 
B)  operator() 
C)  The arrow operator (->) 
D)  The binary scope resolution operator (::) 
A)  The dot operator (.) 
B)  operator() 
C)  The arrow operator (->) 
D)  The binary scope resolution operator (::)

Question 15

The easiest way to set all the values of a vector to zero is to use function:

Accepted Answer

A)  fill 
B)  fill_n 
C)  generate 
D)  generate_n 
A)  fill 
B)  fill_n 
C)  generate 
D)  generate_n

Question 16

Suppose you have a shopping list stored in a vector. What function would you use to remove all items in that vector that are under 10 dollars and place them in another container?

Accepted Answer

A)  remove 
B)  remove_copy 
C)  remove_if 
D)  remove_copy_if 
A)  remove 
B)  remove_copy 
C)  remove_if 
D)  remove_copy_if

Question 17

Which of the following statements is false?

Accepted Answer

A)  With the C++14 version of the equal algorithm to compare two sequences of values for equality, the second sequence must contain at least as many elements as the first-equal returns false if the sequences are not of the same length. 
B)  With the C++14 version of the mismatch algorithm to compare two sequences of values, the algorithm returns a pair of iterators indicating the location in each sequence of the first mismatched elements. If all the elements match, the two iterators in the pair are equal to the end iterator for each sequence. 
C)  Always use C++11's versions of equal and mismatch - these are preferred because they compare the lengths of the ranges for you, eliminating a potential source of logic errors. 
D)  In C++14, use = rather than braces when initializing a variable declared with auto. 
A)  With the C++14 version of the equal algorithm to compare two sequences of values for equality, the second sequence must contain at least as many elements as the first-equal returns false if the sequences are not of the same length. 
B)  With the C++14 version of the mismatch algorithm to compare two sequences of values, the algorithm returns a pair of iterators indicating the location in each sequence of the first mismatched elements. If all the elements match, the two iterators in the pair are equal to the end iterator for each sequence. 
C)  Always use C++11's versions of equal and mismatch - these are preferred because they compare the lengths of the ranges for you, eliminating a potential source of logic errors. 
D)  In C++14, use = rather than braces when initializing a variable declared with auto.

Question 18

Lambdas begin with the lambda introducer ________, followed by a parameter and function body.

Accepted Answer

A)  [] 
B)  () 
C)  {} 
D)   
A)  [] 
B)  () 
C)  {} 
D)

Question 19

Given that v1 and v2 are vectors, what is returned by the function call std::equal(v1.begin(), v1.end(), v2.begin())

Accepted Answer

A)  A bool indicating whether v1 and v2 are equal. 
B)  A bool indicating whether the first element of v1, the last element of v1 and the first element of v2 are all equal. 
C)  An iterator pointing to the first location where v1 and v2 are equal. 
D)  An iterator pointing to the first location where v1 and v2 are not equal. 
A)  A bool indicating whether v1 and v2 are equal. 
B)  A bool indicating whether the first element of v1, the last element of v1 and the first element of v2 are all equal. 
C)  An iterator pointing to the first location where v1 and v2 are equal. 
D)  An iterator pointing to the first location where v1 and v2 are not equal.

Question 20

The for_each function applies a general function to each element in the specified range. This general function should:

Accepted Answer

A)  Take an argument of the elements' type and return nothing. 
B)  Take an argument of the elements' type and return a value of the elements' type. 
C)  Take an argument of a non-const reference to the elements' type and return nothing. 
D)  Take an argument of a non-const reference to the elements' type and return a value of the elements' type. 
A)  Take an argument of the elements' type and return nothing. 
B)  Take an argument of the elements' type and return a value of the elements' type. 
C)  Take an argument of a non-const reference to the elements' type and return nothing. 
D)  Take an argument of a non-const reference to the elements' type and return a value of the elements' type.

Exam 16: Standard Library Algorithms

Functions iter_swap and swap_ranges are similar in that both:

The algorithms in the Standard Library:

Which of the following is not a category of the Standard Library algorithms?

Function mismatch returns:

Which of the following is not a mathematical algorithm included in the Standard Library?

A lambda function can capture local variables ________ and manipulate them inside the lambda's body.

The easiest way to search through a list of names and output the first one that begins with a vowel would be to use function:

Lambdas return types ________.

Which of the following function calls would not return the value that is its first argument?

The order of the arguments passed to function replace_copy_if must be:

Which of the following is a valid generator function prototype for use with generate or generate_n on a vector<char>?

Which algorithm cannot take a predicate function as an argument?

Function objects have their functions called by using:

The easiest way to set all the values of a vector to zero is to use function:

Suppose you have a shopping list stored in a vector. What function would you use to remove all items in that vector that are under 10 dollars and place them in another container?

Which of the following statements is false?

Lambdas begin with the lambda introducer ________, followed by a parameter and function body.

Given that v1 and v2 are vectors, what is returned by the function call std::equal(v1.begin(), v1.end(), v2.begin())

The for_each function applies a general function to each element in the specified range. This general function should:

Introduction to Computers and C++

Introduction to C Programming; Inputoutput and Operators

Introduction to Classes, Objects and Strings

Control Statements, Assignment, and Operators

Control Statements, Logical Operators

Functions and an Introduction to Recursion

Class Templates Array and Vector; Catching Exceptions

Pointers and Pointer-Based Strings

Classes: a Deeper Look; Throwing Exceptions

Operator Overloading; String and Array Objects

Object-Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism

Stream Inputoutput: a Deeper Look

File Processing

Standard Library Containers and Iterators

Exception Handling: a Deeper Look

Introduction to Custom Templates

Custom Templatized Data Structures

Searching and Sorting

Class String and String Stream Processing

Bits, Characters, C Strings and Structs

Other Topics

C++11 Additional Features

Filters