Navigating 1D, 2D, and 3D grids using reinforcement learning Important libraries PyTorch Stable-Baselines3 1D grid (discrete action space) Start: right end, Destination: left end 2D grid (discrete action space) Start: bottom left, Destination: top right 2D grid with obstacle (continuous action space) Start: bottom left, Destination: top right 3D grid with obstacle (continuous action space) Start: [0, 0, 0], Destination: [9, 9, 9]