Exam (elaborations)
C949- Data Structures and Algorithms I Questions and Answers
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C949- Data Structures and Algorithms I
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C949- Data Structures and Algorithms IWhich statement describes a queue data structure? - answerIt 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? - answerDeques
Which data structure allows elements to be inserted and deleted from one end and
provides no direct access to the other end? - answerStack
What are the official indexes for the list list01 given this declaration? int[ ] list01 = {0, 2,
4, 6, 8, 10}; - answer0, 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? - answerList
Which data structure allows insertion and removal from only one end of the data
structure? - answerStack
Which data type does the mystery function return?
return_type mystery (int R)
{
int NumUnits = R;return NumUnits * 3.14;
} - answerDouble
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)) - answerTuple
Which value is appropriate for Test1 given the expression?
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; - answerAssignment
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] - answerArray
Which data type is appropriate for this array to store the given data?
a = ["AF", "71", "BC", "157", "BA", "253"] - answerString
Which data type is appropriate for the given data set?
a = [1, 717, 23, 12, 314, 6] - answerInt
Which data type should be used for this object?
days = { "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday",
"Saturday"} - answerString
Which data type should be used for this variable?
phoneNum = "212-555-1212" - answerString
What is true about garbage collection? - answerIt reclaims memory from data structures
implemented using linked allocations.
What is true about a data structure implemented using linked allocation? -
answerStorage is allocated using pointers to new locations as needed.
What are the array elements corresponding to the mid-values in the first and second
iterations of a binary search in an array arr = {45, 77, 89, 90, 94, 99, 100} and key =
100? - answer90 and 99
What is the effect on the object Computing regarding garbage collection?
Computing obj = new Computing(); obj = null; - answerIt is automatically available for
garbage collection.
What are the mid-values in the first and second levels of recursion in this binary search?
int arr = {46, 76, 89, 90, 94, 99, 100} and key = 99 - answer90 and 99
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