操作没有循环的数组 [英] Manipulating arrays without loops

问题描述

学习VBA for Excel，我试图在不使用循环的情况下进行尽可能多的编码.作为练习，我将两个相邻范围的数量相乘，得出了这样的结果:

Learning VBA for Excel, I am trying to do as much of my coding without the use of loops. As an exercise, multiplying the numbers of two adjacent ranges, I came up with this:

Sub multiply_range()

Dim a, b, c As Range
Set a = Range("a1:a5")
Set b = Range("b1:b5")
Set c = Range("c1:c5")

a.Value = Evaluate("row(" & a.Address & ")")
b.Value = Evaluate("row(" & b.Address & ")")
c.Value = Evaluate(a.Address & "*" & b.Address)

End Sub

哪个效果很好.现在，我想做类似的事情，但改用数组.从以下代码开始:

Which works quite nicely. Now I want to do something similar but using arrays instead. Starting with this code:

Sub multiply_array()

Dim aArr(), bArr(), cArr()
ReDim aArr(5), bArr(5), cArr(5)

For i = 0 To 4
    aArr(i) = i + 1
    bArr(i) = i + 1
Next

For i = 0 To 4
    cArr(i) = aArr(i) * bArr(i)
Next

For i = 0 To 4
    Range("D" & i + 1).Value = cArr(i)
Next

End Sub

如何用不使用循环的代码替换这些FOR循环中的任何一个?

How would you replace any one of these FOR loops with code that doesn't use loops?

推荐答案

在这里:

Sub Squares()
    Dim n&
    n = 5
    [d1].Resize(n) = Evaluate("row(1:" & n & ")^2")
End Sub

更新

这是不使用循环且不使用范围的变体:

Here is a variant that uses no loops and no ranges:

Sub Squares()
    Dim a, b, n&
    n = 5
    a = Array(1, 2, 3, 4, 5)
    b = Array(1, 2, 3, 4, 5)
    [d1].Resize(n) = Evaluate("{" & Join(a, ";") & "}*{" & Join(b, ";") & "}")
End Sub

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