Mergeing two Arrays
 

This will merge two sorted arrays of variant. If you want another data
type, just dimension A1 to A3 accordingly.

Dave Ring

Sub Merge(A1(), A2(), A3())
Dim I&, J&, K&, N1&, N2&, N3&

'merges sorted arrays A1 and A2 into A3
N1 = UBound(A1) + 1 'if array is 0 based
N2 = UBound(A2) + 1
N3 = N1 + N2
ReDim A3(0 To N3 - 1) 'again, 0 based
I = 0: J = 0: K = 0
Do
If A1(I) <= A2(J) Then
A3(K) = A1(I): I = I + 1: K = K + 1
If I = N1 Then 'A1 is used up, so
Do 'move the rest of A2
A3(K) = A1(J): J = J + 1: K = K + 1
Loop Until J = N2: Exit Do
End If
Else
A3(K) = A1(J): J = J + 1: K = K + 1
If J = N2 Then 'A2 is used up, so
Do 'move the rest of A1
A3(K) = A1(I): I = I + 1: K = K + 1
Loop Until I = N1: Exit Do
End If
End If
Loop
End Sub


Paul W Smith wrote:
Has anyone got any sample code for merging two sorted one dimensional arrays
into one sorted new one?

e.g.

A1 = (2, 4, 6, 8)
A2 = (2, 3, 4, 9, 10)

RESULT = (2, 3, 4, 6, 8, 9, 10)