long collatzLength(long x) { ... } Given a long value, treat it as the starting value for a collatz sequence. Return the length of the sequence. Behavior is undefined for non-positive inputs. A collatz sequence always ends with 1. For a particular value n, the next value in the sequence is found as follows: n = 1 No next value; the sequence is complete. Even n: Next value is n / 2 Odd n: Next value is n*3 + 1 You will need more looping logic for this one! long fact (long x) { ... } Given a long value, calculate and return the factorial of that input. Only consider positive inputs (return - 1 if x is