Function max_value_in_trajectory 

pub fn max_value_in_trajectory(n: u64) -> Option<u64>

Returns the largest value reached in the trajectory from n to 1.

Returns None when n == 0 or when a checked odd step overflows.

Examples

use use_collatz::max_value_in_trajectory;

assert_eq!(max_value_in_trajectory(1), Some(1));
assert_eq!(max_value_in_trajectory(6), Some(16));