excel随机三个数,三个数单的平均值要等于指定值,并且三个数之间大小不能超过正负3
时间: 2024-09-06 07:06:07 浏览: 70
在Excel中,你可以通过VBA宏来实现这个需求。首先,假设你要生成的随机整数范围是从-3到3,且平均值需要等于指定的某个数值,比如5。以下是步骤:
1. 打开VBA编辑器(在Excel中按Alt + F11)。
2. 创建一个新的模块,然后编写以下VBA代码:
```vba
Sub GenerateRandomNumbers()
Dim targetAverage As Double
' 设定目标平均值
targetAverage = 5
Dim randomNumbers(2) As Integer
Dim sum As Integer
Dim maxDiff As Integer
' 生成3个随机数,范围在-3到3
For i = 0 To 2
randomNumbers(i) = Int((3 - (-3)) * Rnd + (-3))
Next i
' 确保三个数的和接近目标平均值,并更新最大差值
Do While (sum - (targetAverage * 3)) <> 0 And maxDiff < 6
sum = WorksheetFunction.Sum(randomNumbers)
Dim newNum As Integer
newNum = Int((3 - (-3)) * Rnd + (-3))
If Abs(newNum - randomNumbers Application.WorksheetFunction.Min(randomNumbers)) <= maxDiff Then
randomNumbers(Application.WorksheetFunction.MaxIndex(randomNumbers)) = newNum
Else
maxDiff = Abs(newNum - randomNumbers Application.WorksheetFunction.Min(randomNumbers))
End If
Loop
' 输出结果
Range("A1:A3").Value = randomNumbers
End Sub
```
3. 运行`GenerateRandomNumbers`宏,它会生成满足条件的三个随机整数。
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