Count All Paths Between Two Digits in 3x3 Grid (with/without Diagonals)

google Given a 3x3 grid where each cell contains a digit from 1 to 9. Given two different digits a and b (a!=b), find all paths from digit a to digit b. All four directions (up, down, left, right) are allowed, with a and b being in the range 1 to 9. Requirements: If only the shortest path is needed, how would you handle it? How would you allow diagonal moves in the path? Input Format For requirement 1: Two integers a and b. For requirement 2: Two integers a and b, allowing diagonal movement. Output Format The number of all found paths. Example Input: a = 1, b = 9 Output: x possible paths Input: a = 1, b = 9 (diagonal allowed) Output: y possible paths Example Input 1 9