Arrays Part 2 - Aggregate Algorithms

What is the purpose of an aggregate algorithm in relation to arrays?

• To convert an array into a string.
• To sort the values in an array.
• To find information about values in an array.
• To remove duplicates from an array.

How do you calculate the average of values in an array?

• Sum all values and divide by the number of values.
• Add the maximum and minimum values together.
• Multiply all values and divide by the total count.
• Count the number of values and multiply by the maximum.

Which of the following is an example of an aggregate algorithm?

• Removing the smallest element from the array.
• Reversing the elements of the array.
• Sorting the array in ascending order.
• Finding the maximum value in an array.

Which statement about modifying the maximum algorithm is true?

• It is only applicable to integer arrays.
• It cannot be modified for other purposes.
• It can be adapted to find the minimum value.
• It can be used to find the average value.

What must you do before calculating the average of an array?

• Sort the array in ascending order.
• Remove any negative values from the array.
• Initialize sum and count variables to zero.
• Find the maximum value in the array.

How do you loop through an array to sum values?

• Use recursion to sum the values.
• Use a for-each loop to skip every second element.
• Use a for loop starting from zero to the number of elements.
• Use a while loop until the sum exceeds 100.

Which of the following statements about counting values in an array is accurate?

• Counting values does not require initialization.
• You must loop through the array to count values.
• You can only count integers.
• You can count values without accessing the array.

What is the relationship between the size of the array and the count variable when calculating the average?

• You can use either to calculate the average.
• The count variable is always larger.
• They are always equal.
• The size of the array is irrelevant.

When using the maximum algorithm, what should you initialize the max variable to?

• Zero.
• A very small number.
• The first element of the array.
• A very large number.

What is the first step in finding the minimum value in an array?

• Sort the array in descending order.
• Count the number of elements in the array.
• Find the average of the array.
• Initialize a min variable to a very large number.