VB.net 中使用循环的斐波那契数列

Question

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

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，哪些地方需要使用斐波那契数列？

Answer 1

添加即可

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

只需在 Do ... while 之前

。有关与斐波那契数列相关的应用程序，请参阅：斐波那契数列：应用程序

Answer 2

不要计算序列号中的下一个，然后将结果添加到输出中，而是以相反的顺序执行：

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

就像您在代码中将前两个斐波那契数定义为 0 和 1 一样，您应该将它们放入开头的标签字符串中（即不在循环中）。您还应该对计算出的斐波那契数的数量使用循环条件，而不是依赖于知道第 10 个数是多少。

我从来没有在工作中使用过斐波那契数，但是它们是一个很好的学习练习，具有朴素的递归解决方案，一个带有查找表的简单迭代解决方案（如您的），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

结束课程

Answer 5

试试这个代码：

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，您就可以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

子主函数()

    Dim previousfibo As Integer = 0
    Dim currentfibo As Integer = 1
    Dim nextfibo As Integer
    previousfibo = 0
    currentfibo = 1
    Console.WriteLine(previousfibo)
    Console.WriteLine(currentfibo)
    For I = 1 To 9

        nextfibo = previousfibo + currentfibo
        Console.WriteLine(nextfibo)
        previousfibo = currentfibo
        currentfibo = nextfibo
    Next I
    Console.ReadLine()




End Sub

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

Answer 9

Dim n As integer 
n= inputBox("ENTER A NUMBER")
Dim a As integer 
Dim b As integer 
Dim I As integer 
a=0
b=1
Print b
for I= 1To n
c= a+b
Print c
a=b
b=c
Next
End Sub