Find Array Average in Swift()

Step 1: Define an array

First of all, you need to define the array you should work with. It can be a set of integers or floats depending on your specific requirements. For the sake of our example, let's consider an array of integers. Here's how you can define an array in Swift:

var array = [1, 2, 3, 4, 5]

Step 2: Initialize a variable to store the sum

Next, initialize a variable that will hold the sum of all the elements in the array:

var sum = 0 

Step 3: Sum up the elements in the array

Now you iterate over the array you initialized in step 1 and add up its elements using the variable you declared in step 2. Using a for-in loop for this purpose is the most straightforward approach in Swift:

for number in array { 
   sum += number 
} 

Step 4: Calculate the average

The average of the array is the sum of the elements divided by the total number of elements. You've already got the sum from step 3. To find out how many elements the array contains, you use array.count. You calculate the average and save the result in a new variable:

let average = Double(sum) / Double(array.count) 

Step 5: Finishing up

Now that you've calculated the average, you can put all the steps together into a function. Here is the complete code:

func findArrayAverage(_ array: [Int]) -> Double { 
   var sum = 0 
   for number in array { 
       sum += number 
   } 
   let average = Double(sum) / Double(array.count) 
   return average 
}