Lists!

Which of the following is a benefit of using a list as a data abstraction in a program?

• Lists often allow their size to be easily updated to hold as many data values as needed

• Lists convert all elements to strings so that they can be inspected character-by-character.

• Lists prevent duplicate data values from appearing in the list.

• Lists are used to store all input data so that there is a running record of all user input.

A programmer has a need to round many numeric values to the nearest integer. Which of the following best explains the benefit of using a list as a data abstraction in this situation?

• Keeping the numeric values in a list makes it easier to round a number to the nearest integer.

• Keeping the numeric values in a list makes it easier to apply the same computation to every data element.

• Keeping the numeric values in a list makes it easier to prevent a program from unintentionally changing the value of a variable.

• Keeping the numeric values in a list makes it easier to prevent a program from attempting to access an index beyond the length of the list.

• Step 3

  Increase the value of position by 1.

  Step 4

  Repeat steps 2 and 3 until the value of count is greater than 100.

• Step 3

  Increase the value of position by 1.

  Step 4

  Repeat steps 2 and 3 until the value of position is greater than n.

• Step 3

  Repeat step 2 until the value of count is greater than 100.

  Step 4

  Increase the value of position by 1.

• Step 3

  Repeat step 2 until the value of position is greater than n.

  Step 4

  Increase the value of count by 1.

In the following procedure, the parameter numList is a list of numbers and the parameters j and k are integers.

Which of the following is the most appropriate documentation to appear with the swapListElements procedure?

• Returns a copy of numList with the elements at indices j and k interchanged.The value of j must be between 0 and the value of k, inclusive.

• Interchanges the values of the parameters j and k.The value of j must be between 0 and the value of k, inclusive.

• Returns a copy of numList with the elements at indices j and k interchanged.The values of j and k must both be between 1 and LENGTH(numList), inclusive

• Interchanges the values of the parameters j and k.The values of j and k must both be between 1 and LENGTH(numList), inclusive.

What are the contents of yourList after the code segment is executed?

• [20, 40, 60, 80]

• [10, 30, 50, 70, 20, 40, 60, 80]

• [20, 40, 60, 80, 10, 30, 50, 70]

• [10, 30, 50, 70]