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Chapter 8: Problem 16

Briefly describe how you get the average of the values in an array.

Short Answer

Expert verified
Answer: The main challenge when finding the average of an array's values is to correctly calculate the sum of the elements in the array and divide it by the number of elements present in the array.

Step by step solution

01

Understand the Array

An array is a collection of elements, usually of the same data type, stored in contiguous memory locations. Each element can be identified by a unique index. In this exercise, our task is to find the average of the values in an array.
02

Calculate the sum of the elements in the array

To calculate the sum of the elements present in the array, loop through the array using a 'for' loop or any other looping technique, and add each element to a variable, say "sum", initialized to 0. pseudo-code: sum = 0 for i in range(0, length of the array): sum = sum + array[i]
03

Calculate the number of elements in the array

To calculate the number of elements in the array, use the 'length' function or a similar method depending on the programming language you are using. The number of elements in the array is essential for calculating the average of its values. pseudo-code: array_length = length(array)
04

Calculate the average of the values in the array

Now that we have calculated the sum of the elements in the array, as well as the number of elements in it, we can determine the average. Divide the sum of the elements by the number of elements to get the average. pseudo-code: average = sum / array_length
05

Output the Average Value

Print the average value as the final output. This will give you the average of the values in the array. pseudo-code: print("The average of the values in the array is:", average)

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Most popular questions from this chapter

What is a search algorithm?

Write a pseudocode declaration for a two-dimensional array initialized with the following table of data: $$\begin{array}{ccccc} 12 & 24 & 32 & 21 & 42 \\ 14 & 67 & 87 & 65 & 90 \\ 19 & 1 & 24 & 12 & 8 \end{array}$$

Which array element does the sequential search algorithm first look at?

In most languages, can the size of an array be changed while the program is running?

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