I would like to find the largest integer(s) between 3 integers.
I could do this by nesting If
statements. Since I have further code to write however this would be long and untidy.
I was wondering if there was an easier way to find the largest integer(s) (including if let's say A
and B
are equal but both higher than C
).
PS Can you do this with 2-D arrays?
Use LINQ to do this:
Dim numbers() As Integer = {1, 3, 5}
Dim max As Integer = numbers.Max()
Debug.Write("Max number in numbers() is " & max.ToString())
Output:
Edited as per conversation with OP on wanting to know which genre was ranked the best.
When asked How do you get the data? OP responds with:
I have a text file containing movie|genre on every line. I read this and count which genre (out of 3) is the highest.
I have drafted up some code which reads from a text file and populates a class.
First let me show you the code:
Dim myFilms As New Films
Using sr As New IO.StreamReader("C:\films.txt")
Do Until sr.Peek = -1
Dim columns As String() = sr.ReadLine().Split(New Char() {"|"c}, StringSplitOptions.RemoveEmptyEntries)
'columns(0) = film name
'columns(1) = genre
myFilms.Add(New Film(columns(0), columns(1)))
Loop
End Using
If myFilms.Count > 0 Then
Dim bestGenre = myFilms.GetBestGenre()
'Go off and read the genre file based on bestGenre
End If
From the above code you can see the class Films
being populated with a new Film
. I then call a method from the Films
class, but only if there are films to choose from. Let me show you the class structure for both these:
Film:
Public Class Film
Public Key As String
Public Sub New(ByVal filmName As String,
ByVal genre As String)
_filmName = filmName
_genre = genre
End Sub
Private _filmName As String
Public ReadOnly Property FilmName As String
Get
Return _filmName
End Get
End Property
Private _genre As String
Public ReadOnly Property Genre As String
Get
Return _genre
End Get
End Property
End Class
Films:
Public Class Films
Inherits KeyedCollection(Of String, Film)
Protected Overrides Function GetKeyForItem(ByVal item As Film) As String
Return item.Key
End Function
Public Function GetBestGenre() As String
Return Me.GroupBy(Function(r) r.Genre).OrderByDescending(Function(g) g.Count()).First().Key
End Function
End Class
I must note that although this code does work it may come unstuck if you have 2 or more genres which are joint top. The code still works however it only returns one of the genres. You may want to expand on the code to suit your needs based on that scenario.
Try something like this:
Dim max As Integer
max = integer1
If integer2 > max Then
max = integer2
End If
If integer3 > max Then
max = integer3
End If
Not many more ways that I can think of off the top of my head to do this.
Something along these lines will work for any number of integers. Put the numbers into an array then use a For[...]Next
statement to loop through the array comparing the current member with max
. If max
is lower, set it to the current member. When the loop terminates, max
will contain the highest number:
Dim nums() As Integer = {1, 2, 3}
Dim max As Integer
For i = 0 To nums.Length - 1
If max < nums(i) Then
max = nums(i)
End If
Next
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