Question

How to convert a 2D coordinate into 1D index in VB.NET

Answer 1

Imports System

Public Class Program
	Public Shared Sub Main()
		Dim array2d As Integer(,) = {
				{1, 2, 3, 6, 0},
				{-5, -4, 0, 7, 9},
				{1, 7, 100, 14, 6},
				{9, 10, 11, 12, 13}}

        Dim cols As Integer = array2d.GetUpperBound(1) + 1
        
		Dim i As Integer = 1, j As Integer = 3
        
		Dim index As Integer = i * cols + j
        
		Console.WriteLine(index)
    End Sub
End Class



' run:
'
' 8
'

 

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