Function format_route

pub fn format_route(route: &[Vec<usize>]) -> String

Formats a routing path as a string, showing each hop in order.

Each line shows the hop index, an arrow (→ for intermediate steps, ⇨ for the final destination), and the coordinate as a tuple (e.g., (0, 1)).

Example

 0 → (0, 0)
 1 → (0, 1)
 2 ⇨ (1, 1)