VB冒泡法里面另一个变量的用途

Private Sub Command1_Click()
<br>Dim a(1 To 5), i, j As Integer
<br>For i = 1 To 5
<br>a(i) = InputBox("d")
<br>Next
<br>For i = 5 To 2 Step -1
<br>For j = 1 To (i - 1)
<br>If a(j) &gt; a(j + 1) Then
<br>b = a(j): a(j) = a(j + 1): a(j + 1) = b
<br>End If
<br>Next j
<br>Next i
<br>For i = 1 To 5
<br>rint a(i)
<br>Next
<br>
<br>End Sub
<br>
<br>
<br>里面的j有什么用?

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