Data Structures

Which of these is the best description of a list in Python?

• A list is a collection of data that has an order and can be changed

• A list is a lot of variables

• A list is used for shopping

• A list is a collection of data that cannot hold duplicated data and cannot be changed

Which of these is the correct code for creating a list of names?

• nameList = John, Harry, Jesse, John, Harry, Harry

• nameList = ("John", "Harry", "Jesse", "John", "Harry", "Harry")

• nameList = ["John", "Harry", "Jesse", "John", "Harry", "Harry"]

• nameList = [John, Harry, Jesse, John, Harry, Harry]

Which of these pieces of code would return the name "Harry" from the following list?

nameList = ["John", "Harry", "Jesse", "John", "Harry", "Harry"]

• nameList()

• nameList[1]

• NameList(4)

• nameList["4"]

The list needs one more name added to the end - "Felipe". Which piece of code below would do this?

nameList = ["John", "Harry", "Jesse", "John", "Harry", "Harry"]

• nameList.append(Felipe)

• append(nameList,"Felipe")

• nameList.append["Felipe",7]

• nameList.append("Felipe")

What is the syntax for creating a list in Python?

• {}

• []

• ||

• ()

big_list = [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1]

What command will count the total number of elements in this list?

• print(len(big_list))

• print(len("big_list"))

• big_list.pop(1)

• big_list.append(1)

names=["Joe", "Tom", "Sam", "Bill"]

What command will add "Tim" between "Sam" and "Bill"?

• names.pop(3,"Tim")

• names.append(3,"Tim")

• names.insert(3,"Tim")

• names.remove(3,"Tim")

values = [5, 3, 3, 7, 10,3]

values.remove(3)

What is the output?

• [3,3,3]

• [5,3,3,10,3]

• [5,7,10]

• [5,3,7,10,3]

values = [5, 3, 7, 10,20]

values.pop(3)

What is the output?

• [5,3,7,10,20,3]

• [5,3,7,20]

• [5,7,10,20]

• [10,20]