How to Rotate a 2D Array of Integers

Question

I am programming a Tetris clone and in my game I store my tetromino blocks as 4x4 arrays of blocks. I now need to be able to rotate the integer positions in the arrays so th

Answer 1

Don't rotate the pieces with code. Just store an array of the different piece orientations and cycle through them when the piece is rotated. There's no need to dynamically rotate them in a Tetris game.

As the problem domain is Tetris, you will find that a rotation algorithm causes undesirable effects, such as the long thin Tetronimo not alternating between two positions (as it does in the real thing).