Graph theory algorithms in Rust.

The graph format stores a list of colors. The file is a sequence of characters: '1' for RED, and '0' for BLUE. Take for instance, a 4-vertex graph with vertices 0, 1, 2 and 3. The order is specified below.

1~0 // Add 2nd Vertex (1 edge)
2~0 // Add 3rd Vertex (2 edges)
2~1
3~0 // Add 4th Vertex (3 edges)
3~1
3~2

Example coloring file for K4:

110010