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1.某数组有20个元素,其值为随机产生的两位整数。现要求将
1.某数组有20个元素,其值为随机产生的两位整数。现要求将前10个元素与后10个元素对换。即第1个元素与第20个元素互换,第2个数与第19个元素互换,…,第10个元素与第11个元素互换。在窗体上输出数组原来各元素的值与对换后各元素的值。
Option Explicit
Dim a(1 To 20) As Integer, i As Integer, j As Integer, t As Integer
Private Sub Form_Load()
Show
Print
Randomize
For i = 1 To 20
a(i) = Int(Rnd * 90) + 10
Print a(i);
If i Mod 10 = 0 Then Print
Next i
Print
Print
For i = 1 To 10
j = 21 - i
t = a(i): a(i) = a(j): a(j) = t
Next i
For i = 1 To 20
Print a(i);
If i Mod 10 = 0 Then Print
Option Explicit
Dim a() As Integer, i As Integer, j As Integer, n As Integer, k As Integer, m As Integer
Dim flag As Boolean
Private Sub Form_Load()
Show
ReDim a(9) As Integer
m = 1
Print
For i = 0 To 9
a(i) = InputBox( m 个数:)
Print a(i);
m = m + 1
Next i
Print
n = InputBox()
i = 0: flag = False
Do
If a(i) = n Then
j = i: flag = True
For k = j To UBound(a) - 1
a(k) = a(k + 1)
Next k
ReDim Preserve a(UBound(a) - 1)
i = i - 1
End If
i = i + 1
Loop While (i = UBound(a))
If flag = False Then
MsgBox n
Else
Print n 后的数组是:
For i = 0 To UBound(a)
Print a(i);
Next i
End If
Option Explicit: Option Base 1
Dim a(), n As Integer, i As Integer, m As Integer, k As Integer
Private Sub Form_Load()
Show
n = 8: ReDim a(n)
a = Array(5, 15, 23, 52, 68, 88, 90, 99)
For i = 1 To 8
Print a(i);
Next
Print
n = n + 1: ReDim Preserve a(n)
For i = 1 To n - 1
If m a(i) Then Exit For
Next i
For k = n To i + 1 Step -1
a(k) = a(k - 1)
Next k
a(k) = m
For i = 1 To n
Print a(i);
Next i
Print
End Sub
Option Explicit
Private Sub Command1_Click()
Dim a As Long, b As Long, c As Long, m As Double, x As Single, y As Single, d As Single, e As Single, xu1 As String, xu2 As String
a = Val(Text1.Text): b = Val(Text2.Text): c = Val(Text3.Text)
m = b ^ 2 - 4 * a * c
S
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