C949- Data Structures and Algorithms
Exam Questions Containing 97 Terms
with Correct Answers, Already Graded
A+ 2024.
Which statement describes a queue data structure? - Answer: It is a sequence of
elements in which insertions can take place only at the back end and deletions can
take place only at the front end.
Which data structure allows inserting and deleting data elements at both the front
and the rear? - Answer: Deques
Which data structure allows elements to be inserted and deleted from one end
and provides no direct access to the other end? - Answer: Stack
, C949- Data Structures and Algorithms
What are the official indexes for the list list01 given this declaration? int[ ] list01 =
{0, 2, 4, 6, 8, 10}; - Answer: 0, 1, 2, 3, 4, 5
Which abstract data type (ADT) has elements of the same type so that the
elements can be retrieved based on the index or position? - Answer: List
Which data structure allows insertion and removal from only one end of the data
structure? - Answer: Stack
Which data type does the mystery function return?
return_type mystery (int R)
{
int NumUnits = R;return NumUnits * 3.14;
} - Answer: Double
Which category of data does ("FB", 75.00, 75.03, 74.90) represent in the
pseudocode?
import datetime
def middle(stock, date):
symbol, current, high, low = stock
return (((high + low) / 2), date)
mid_value, date = middle(("FB", 75.00, 75.03, 74.90),
datetime.date(2014, 10, 31)) - Answer: Tuple
Which value is appropriate for Test1 given the expression?
, C949- Data Structures and Algorithms
char Test1; - Answer: 'L'
Which value is appropriate for the variable middle given the pseudocode?
function mystery()
{
string last;
string first;
char middle;
int phone;
float rate;
} - Answer: 'D'
Which type of operation is represented in the pseudocode?
int x,y,z;
x=y=z=100; - Answer: Assignment
What is the most efficient data type to use for this data set of a fixed size in Java?
a = [0, 0, 1, 4, 7, 16, 31, 64, 127] - Answer: Array
Which data type is appropriate for this array to store the given data?
a = ["AF", "71", "BC", "157", "BA", "253"] - Answer: String
Which data type is appropriate for the given data set?