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vb常用例题1技巧.doc

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马鞍点 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim arrSaddle(5, 5) As Integer Dim i%, j%, intPos% Dim blnFlag As Boolean arrSaddle = { {73, 58, 62, 36, 37, 79}, {11, 8, 13, 73, 14, 47}, {87, 81, 63, 96, 88, 75}, {52, 36, 60, 68, 33, 35}, {84, 84, 63, 98, 91, 70} } For i = 0 To 4 intPos = 0 For j = 1 To 5 If arrSaddle(i, j) arrSaddle(i, intPos) Then intPos = j End If Next blnFlag = True For j = 0 To 4 If arrSaddle(j, intPos) arrSaddle(i, intPos) Then blnFlag = False Exit For End If Next If blnFlag Then TextBox1.Text = 第 i 行,第 intPos 列 vbCrLf Next End Sub 斐波那契数列找素数 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim arrA(20), i, j Dim flag As Boolean arrA(0) = 1 : arrA(1) = 1 : arrA(2) = 1 Label2.Text = Fibonacci为a:êo1 1 1 For i = 3 To 20 arrA(i) = arrA(i - 3) + arrA(i - 2) + arrA(i - 1) Label2.Text = Label2.Text arrA(i) flag = True For j = 2 To arrA(i) - 1 If arrA(i) Mod j = 0 Then flag = False : Exit For Next If flag = True Then TextBox2.Text = arrA(i) End If Next End Sub *斐波纳契数列(前20项) Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim f%(20), i% f(1) = 1 f(2) = 1 TextBox1.Text = f(1) f(2) For i = 3 To 20 f(i) = f(i - 1) + f(i - 2) TextBox1.Text = f(i) Next End Sub *一百以内素数 Private Sub Button1_C

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