Executing two loops at the same time

What I am trying to do is applying different calculations depending on whether the number is odd or even.

 n = input('Your number = ');
 i = 1;
 while n ~= 1
 while rem(n,2) == 0
    n = (n/2);
    i = i + 1;
 end
 while rem(n,2) == 1
    n = (3*n) + 1;
    i = i + 1;
 end
 end
 i

This is what I have currently. However when I enter n, the script runs forever and I have to restart the matlab. How can I make this loop to continue until n reaches 1?

Answer 1

[JESUS DAVID ARIZA ROYETH]

you can do like this:

n = input('Your number = ');
 i = 1;
 while n ~= 1
 while rem(n,2) == 0 && n ~= 1
    n = (n/2);
    i = i + 1;
 end
 while rem(n,2) == 1 && n ~= 1
    n = (3*n) + 1;
    i = i + 1;
 end
 end
 i

[Sang Heon Lee]

Thank! It works!!!

but I still cannot understand how the script you provided works and mine doesn't...

does && n ~= 1 matter..? I mean, n ~= 1 is already given from the first while, and what does n ~= 1 behind the subsequent while do??