Cody

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

Solution 55630

Submitted on 3 Mar 2012 by David Smith
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))

counter = 1 c = 1

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

counter = 1 c = 2 n = 1 counter = 2 c = 2 1

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

counter = 1 c = 5 n = 16 counter = 2 c = 5 16 n = 8 counter = 3 c = 5 16 8 n = 4 counter = 4 c = 5 16 8 4 n = 2 counter = 5 c = 5 16 8 4 2 n = 1 counter = 6 c = 5 16 8 4 2 1

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))

counter = 1 c = 22 n = 11 counter = 2 c = 22 11 n = 34 counter = 3 c = 22 11 34 n = 17 counter = 4 c = 22 11 34 17 n = 52 counter = 5 c = 22 11 34 17 52 n = 26 counter = 6 c = 22 11 34 17 52 26 n = 13 counter = 7 c = 22 11 34 17 52 26 13 n = 40 counter = 8 c = 22 11 34 17 52 26 13 40 n = 20 counter = 9 c = 22 11 34 17 52 26 13 40 20 n = 10 counter = 10 c = 22 11 34 17 52 26 13 40 20 10 n = 5 counter = 11 c = Columns 1 through 10 22 11 34 17 52 26 13 40 20 10 Column 11 5 n = 16 counter = 12 c = Columns 1 through 10 22 11 34 17 52 26 13 40 20 10 Columns 11 through 12 5 16 n = 8 counter = 13 c = Columns 1 through 10 22 11 34 17 52 26 13 40 20 10 Columns 11 through 13 5 16 8 n = 4 counter = 14 c = Columns 1 through 10 22 11 34 17 52 26 13 40 20 10 Columns 11 through 14 5 16 8 4 n = 2 counter = 15 c = Columns 1 through 10 22 11 34 17 52 26 13 40 20 10 Columns 11 through 15 5 16 8 4 2 n = 1 counter = 16 c = Columns 1 through 10 22 11 34 17 52 26 13 40 20 10 Columns 11 through 16 5 16 8 4 2 1