VB.net中使用循环的斐波那契序列

Question

[请您帮我显示前10个斐波那契数字。我的代码显示以下结果：1、2、3、5、8、13、21、34、55，我还需要它来显示前两个斐波那契数字（0和1）。我该怎么办？

Public Class Form1
  Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    Dim a As Integer = 0
    Dim b As Integer = 1
    Dim fib As Integer = 0

    Do
      fib = a + b
      a = b
      b = fib
      Label1.Text = Label1.Text + fib.ToString & ControlChars.NewLine
    Loop While fib < 55
  End Sub
End Class

在专业编程中的哪里需要使用斐波那契数列？

Answer 1

只需添加

Label1.Text = Label1.Text + a.ToString & ControlChars.NewLine
Label1.Text = Label1.Text + b.ToString & ControlChars.NewLine

Do ... while之前。

有关与斐波那契数字关联的应用程序，请参见：Fibonacci: Applications

Answer 2

而不是计算下一个顺序号，然后将结果添加到输出中，请按相反的顺序进行：

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    Dim a As Integer = 0
    Dim b As Integer = 1
    Dim fib As Integer 

    Do
        Label1.Text += a.ToString & ControlChars.NewLine
        fib = a + b
        a = b
        b = fib
    Loop While a <= 55

End Sub

Answer 3

以与您在代码中将前两个斐波那契数定义为0和1相同的方式，应在开头将它们放入标签字符串中（即不在循环中）。您可能还应该对已计算的斐波那契数的数量使用循环条件，而不要依赖于知道第10个数。

我从未在工作中使用斐波那契数，但是它们与朴素的递归语言一样是一项很好的学习练习，其中包含查找表，简单的迭代语言（如您的语言），使用黄金比例，矩阵形式.. 。

Answer 4

Private Sub Button4_Click(sender As Object, e As EventArgs) Handles Button4.Click
    Dim a As Integer = 0
    Dim b As Integer = 1
    Dim fib As Integer
    Dim userinput, i As Integer
    userinput = InputBox("how many")
    i = userinput
    ListView3.Items.Add(1)
    Do
        fib = a + b
        a = b
        b = fib
        ListView3.Items.Add(fib)
        i = i + 1
    Loop While fib < i
End Sub

结束类

Answer 5

尝试此代码：

Dim arr As New ArrayList()
    Console.Write("The Fibonacci Series is : ")
    For i As Integer = 0 To 10
        If i = 0 Or i = 1 Then
            arr.Add(i)
            Console.Write(arr(i).ToString() + ", ")               
        Else
            arr.Add(arr(i - 2) + arr(i - 1))
            If i = 10 Then
                Console.Write(arr(i).ToString())
            Else
                Console.Write(arr(i).ToString() + ", ")
            End If
        End If
    Next
    Console.Read()

Answer 6

非常简单，只需使用一个按钮，就可以根据需要生成任意数量的序列。

Sub fibonacci()

mycount = Application.CountA(Range("A:A"))

e = mycount - 1
fib = 0
fib = Cells(e, 1).Value + Cells(e + 1, 1).Value
Cells(mycount + 1, 1).Value = fib
mycount = mycount + 1

End Sub

Answer 7

Dim n作为整数n = inputBox（“输入数字”）昏暗为整数Dim b作为整数昏暗我作为整数a = 0b = 1打印b对于I = 1至nc = a + b打印ca = bb = c下一个结束子

Answer 8

Dim a, b, c as integer

a=0

b=1

print a 

print b

while c<(n-c)

c=a+b

print c

a=b

b=c

wend

print "This is Fibonacci Series"

End Sub