👉 CitySearch is a pathfinding algorithm designed to efficiently find the shortest path between start and goal nodes in a grid-based city map, commonly used in urban planning and logistics. It operates by simulating the behavior of ants, where each ant constructs a path from the start to the goal, depositing pheromones that guide subsequent ants. Initially, all paths are equally likely, but as ants find shorter routes, they deposit more pheromones, reinforcing these paths. Over time, the algorithm converges on the optimal path as shorter routes accumulate more pheromones, effectively guiding the ants to the shortest possible route. This process is iterated until a satisfactory solution is found, making CitySearch particularly useful for optimizing traffic flow and delivery routes in complex urban environments.