Rubik's cube solver

Implements the 4-List algorithm from this blog post for solving Rubik's cubes.

In princple, this algorithm can solve a more general puzzle than Rubik's cubes. Given a set of permutations $M$ and a target permutation $s$ such $s \in M^k$ for some $k \in \mathbb{N}$, the 4-List can find permutations $m_1, ..., m_k$ such that $s = m_1 \circ \dots \circ m_k$. Note that we assume here that all permutations are of the same length.

Build and Run

make
./solve

The user interface for this program isn't great. You have to edit src/main.cc and then compile and run to solve a different scramble. I got bored of this project before I got around to implementing a nice interface. Anyway, it still works, you just gotta edit the code.

There's some comments in main.cc to help you test the code.