This problem asks for the shortest route between two nodes in a graph. The input is a list of nodes and their connections. The output should be the shortest route between the two given nodes.

A.I. Evaluation of the Solution

The candidate's solution correctly implements a breadth-first search to find a route between two nodes in a graph. The solution is complete and correctly handles edge cases such as null input values.

Evaluated at: 2022-12-07 08:15:47