Problem rearranging vector (a column of a matrix)

Hi, similar to the 2048 game, on a 4x4 board with 1's, 2's, 4's and the following power of 2's, I'd like to write a slightly different game to it. The only problem I have is rearranging a vector such that by selecting 'up', c = [1, 1, 0, 4]' turns into c = [2, 4, 0, 0]'. I could use loops but can you think of a way to do it using logical ops?

[Image Analyst]

You assume everyone knows the rules and algorithm for the 2048 game. I don't. http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

Answer 1

[Walter Roberson]

c = mod(c .^ 2, 8);