Can anyone help?

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Can anyone help?

Javier Taylor 23 Oct 2019 03:43

Hi my name is Javier Taylor and I am working on a program that will take 1 mod 3 and 2 mod 3 mumbers backward in the Collatz conjecture. The problem is that I can't figure how to do two different operation under a while loop. So while the input is not 0 mod 3 I want the program to check th eremajndef mod3. If it is 1 then multiply by 4, subtract 1 and divide the difference by 3. If number is 2 mod 3 the multiply by 2, subtract 1 and divide by 3. When the sequence reaches a 0 mod 3 then end program and display list of odd numbers in sequence.

Re: Can anyone help?

Javier Taylor 23 Oct 2019 03:46

Sorry i am using my phone keyboard….i meant that I want the program to take the input odd number check is remainder mod3 and if it is 1 multiply by 4, subtract 1 and divide the difference by 3. If it is 2 then multiply by 2, subtract 1 and divide the difference by 3. Repeat this process until you reach a 0 mod 3 odd number. While the progeam is working I want to keep teack of the sequence of 1 and 2 mod 3 numbers in the parh if the 0 mod 3.

Last edited on 23 Oct 2019 03:48 by Javier Taylor Show more

Re: Can anyone help?

Trenly 23 Oct 2019 04:12

You will need two if statements inside your while loop, probably something like:

while number is not 0 (mod 3)
    if 1 (mod 3) then 
        do this
    End
    If 2 (mod 3) then
        do this
    End
End

Mod 3 is an easy one to do. You will need the following snippets of code:

not(fPart(X/3)) - Returns 1 if the result of X mod 3 is 0, else returns 0
(fPart(X/3)*(fPart(X/3)<.5)) - Returns 1 if the result of X mod 3 is 1, else returns 0 
(fPart(X/3)>.5) - Returns 1 if the result of X mod 3 is 2, else returns 0

I'm not going to write all the code for you, since doing it yourself will help you learn, but here should be enough to get you started:

//Get user input for starting value, stored into X
While not(fPart(X/3
    If (fPart(X/3)*(fPart(X/3)<.5)):Then
        //what to do if the result of X mod 3 is one
    End
    If (fPart(X/3)>.5) then
        //what to do if the result of X mod 3 is two
    End
End