Finding a Average of an Array of Integer

Question

I have this code

    Dim intPerson As Integer

    For Each intPerson In intAge

    Next

intPerson holds a different number every time the loop is executed because intAge is an array. Is there a way I can find the average of intPerson by adding each number each time and then dividing it by the amount of numbers there are in the array?

You don't need to dimension the iterator in a For Each loop. — вʀaᴎᴅᴏƞ вєнᴎєƞ
– вʀaᴎᴅᴏƞ вєнᴎєƞ, Commented Apr 26, 2016 at 13:12
Yeah that. My brain is was being a potato. What I should have typed was: "You don't need to Dim the iterator of a For Each loop beforehand." — вʀaᴎᴅᴏƞ вєнᴎєƞ
– вʀaᴎᴅᴏƞ вєнᴎєƞ, Commented Apr 26, 2016 at 13:21

Matt Wilko · Accepted Answer · 2016-04-26 12:58:17Z

2

The easiest way is to use Linq:

    'create an array with some sample ages
    Dim intAge As Integer() = {22, 34, 56, 87, 19}
    'find the average
    Dim averageAge = intAge.Average 'averageAge = 43.6

If you wanto do this longhand you can sum up the values and divide by the number:

    Dim totalAges As Integer = 0
    For i As Integer = 0 To intAge.Count - 1
        totalAges += intAge(i)
    Next
    averageAge = totalAges / intAge.Count 'averageAge = 43.6

answered Apr 26, 2016 at 12:58

Matt Wilko

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