Cody

# Problem 21. Return the 3n+1 sequence for n

Solution 1977433

Submitted on 15 Oct 2019 by Joseph Chambers
This solution is locked. To view this solution, you need to provide a solution of the same size or smaller.

### Test Suite

Test Status Code Input and Output
1   Pass
n = 1; c_correct = 1; assert(isequal(collatz(n),c_correct))

i = 2 c = 1

2   Pass
n = 2; c_correct = [2 1]; assert(isequal(collatz(n),c_correct))

i = 2 c = 2 even c = 2 1 n = 1 i = 3

3   Pass
n = 5; c_correct = [5 16 8 4 2 1]; assert(isequal(collatz(n),c_correct))

i = 2 c = 5 odd c = 5 16 n = 16 i = 3 even c = 5 16 8 n = 8 i = 4 even c = 5 16 8 4 n = 4 i = 5 even c = 5 16 8 4 2 n = 2 i = 6 even c = 5 16 8 4 2 1 n = 1 i = 7

4   Pass
n = 22; c_correct = [22 11 34 17 52 26 13 40 20 10 5 16 8 4 2 1]; assert(isequal(collatz(n),c_correct))

i = 2 c = 22 even c = 22 11 n = 11 i = 3 odd c = 22 11 34 n = 34 i = 4 even c = 22 11 34 17 n = 17 i = 5 odd c = 22 11 34 17 52 n = 52 i = 6 even c = 22 11 34 17 52 26 n = 26 i = 7 even c = 22 11 34 17 52 26 13 n = 13 i = 8 odd c = 22 11 34 17 52 26 13 40 n = 40 i = 9 even c = 22 11 34 17 52 26 13 40 20 n = 20 i = 10 even c = 22 11 34 17 52 26 13 40 20 10 n = 10 i = 11 even c = 22 11 34 17 52 26 13 40 20 10 5 n = 5 i = 12 odd c = 22 11 34 17 52 26 13 40 20 10 5 16 n = 16 i = 13 even c = 22 11 34 17 52 26 13 40 20 10 5 16 8 n = 8 i = 14 even c = 22 11 34 17 52 26 13 40 20 10 5 16 8 4 n = 4 i = 15 even c = 22 11 34 17 52 26 13 40 20 10 5 16 8 4 2 n = 2 i = 16 even c = 22 11 34 17 52 26 13 40 20 10 5 16 8 4 2 1 n = 1 i = 17