list and operations

Multiple Choice

What is the benefit of using lists in programming?

• They can only store one type of data

• They are always faster than arrays

• They provide the ability to store more than one value in the same variable

• They cannot be accessed by index

Multiple Choice

Which data structure is best suited for storing key-value pairs?

• List

• Tuple

• Dictionary

• Set

Multiple Choice

What is the notation used to access the first element of a list in programming?

• aList[0]

• aList[1]

• aList[i]

• aList.first()

Multiple Choice

List items have an index number. In the following list, which item has the index number of 3?

["John", "Harry", "Jesse", "John", "Harry", "Harry"]

• "John"

• "Harry"

• "Jesse"

Multiple Choice

What does the INSERT function do in the context of aList?

• It removes an element from aList

• It shifts elements to the right and adds a new value

• It assigns a value to a specific index

• It appends a value to the end of aList

Multiple Choice

How do you remove the element `10` from a list named `numbers`?

• a) numbers.remove(10)

    

• b) numbers.delete(10)

•    c) numbers.pop(10)

•  d) numbers.discard(10)

Multiple Choice

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")

Multiple Choice

Find the output of the code:

List = [True, 50, 10]

List.insert(2, 5)

print(List, "Sum is: ", sum(List))

• [True, 50, 10, 5] Sum is: 66

• [True, 50, 5, 10] Sum is: 65

• TypeError: unsupported operand type(s) for +: ‘int’ and ‘str’

• [True, 50, 5, 10] Sum is: 66

Multiple Choice

What does the REMOVE function do in the context of a list?

• Removes an item at a specified index

• Adds an item to the end of the list

• Reverses the order of the list

• Sorts the list in ascending order

Open Ended

1. Describe step-by-step what this program does.

Multiple Choice

What will be the output of the following code? ```python for i in range(3): if i == 1: continue print(i) ```

• 0 1 2

• 0 1

• 0 2

• 1 2

Fill in the Blanks

Multiple Choice

Part of a program is shown.

What happens in Lines 3 to 6 when the value 2.0 is entered at Line 2?

• "Failed to qualify" message is displayed

• "Congratulations" message is displayed

• No message is displayed

• Both messages are displayed

Multiple Choice

What will be printed by the following code?

• 1.5

• 2

• 0

• 3

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident