1|Page
WGU C949 DATA STRUCTURES AND ALGORITHMS I OBJECTIVE
ASSESSMENT EXAM QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES (VERIFIED ANSWERS) |AGRADE
Iterating over a collection of data once often indicates an ______
algorithm. (alphabet for-loop example)
O(n)
A functions whose cost scales logarithmically with the input size
O(log n)
Which type of function works by breaking down large problem into
smaller and smaller chunks?
O(log n)
As the size of the input grows the cost of the algorithm does not
increase at the same rate. The overall cost of performing an operation
on 1,000,000 items is only twice that of performing the operation on
1,000 items.
O(log n)
,2|Page
Image: As the size of the input grows the cost of the algorithm does not
increase at the same rate. The overall cost of performing an operation
on 1,000,000 items is only twice that of performing the operation on
1,000 items.
A function that exhibits quadratic growth relative to the input size
O(n^2)
An example of this type of function is doubly nested loop
O(n^2)
Which type of function gets really expensive really quickly?
O(n^2)
Image: Which type of function gets really expensive really quickly?
A function that has two inputs that contribute to growth
O(nm)
,3|Page
An example of this type of function is when there is a nested loop that
iterates of two distinct collections of data
O(nm)
Are Big-O cases used in the best or worst situations?
Worst
Which statement is static?
readonly Contact[] contacts = new Contact[];
readonly Contact contacts = new Contacts[100];
readonly Contact contacts = new Contacts[100];
A container where data is stored in nodes consisting of a single data
item and a reference to the next node
Linked List
, 4|Page
A ______ is a container where nodes of data are linked together into a
list
Linked List
Linking together complex nodes into a single structure
Linked List
Each link in a chain for a linked lists is called a ______
node
What two things do nodes contain?
1. the value
2. reference to next item in the list
Give a coded example on how to create a 3 chained linked list of nodes.
Node head = new Node(1);
head.Next = new Node(2);
WGU C949 DATA STRUCTURES AND ALGORITHMS I OBJECTIVE
ASSESSMENT EXAM QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES (VERIFIED ANSWERS) |AGRADE
Iterating over a collection of data once often indicates an ______
algorithm. (alphabet for-loop example)
O(n)
A functions whose cost scales logarithmically with the input size
O(log n)
Which type of function works by breaking down large problem into
smaller and smaller chunks?
O(log n)
As the size of the input grows the cost of the algorithm does not
increase at the same rate. The overall cost of performing an operation
on 1,000,000 items is only twice that of performing the operation on
1,000 items.
O(log n)
,2|Page
Image: As the size of the input grows the cost of the algorithm does not
increase at the same rate. The overall cost of performing an operation
on 1,000,000 items is only twice that of performing the operation on
1,000 items.
A function that exhibits quadratic growth relative to the input size
O(n^2)
An example of this type of function is doubly nested loop
O(n^2)
Which type of function gets really expensive really quickly?
O(n^2)
Image: Which type of function gets really expensive really quickly?
A function that has two inputs that contribute to growth
O(nm)
,3|Page
An example of this type of function is when there is a nested loop that
iterates of two distinct collections of data
O(nm)
Are Big-O cases used in the best or worst situations?
Worst
Which statement is static?
readonly Contact[] contacts = new Contact[];
readonly Contact contacts = new Contacts[100];
readonly Contact contacts = new Contacts[100];
A container where data is stored in nodes consisting of a single data
item and a reference to the next node
Linked List
, 4|Page
A ______ is a container where nodes of data are linked together into a
list
Linked List
Linking together complex nodes into a single structure
Linked List
Each link in a chain for a linked lists is called a ______
node
What two things do nodes contain?
1. the value
2. reference to next item in the list
Give a coded example on how to create a 3 chained linked list of nodes.
Node head = new Node(1);
head.Next = new Node(2);
