Question

In a backtracking algorithm, what happens when a partial solution is found to violate a constraint?

Q: Answer-In a backtracking algorithm, what happens when a partial solution is found to violate a constraint?

The core idea of backtracking is to explore a path, and if that path leads to a dead end violates a constraint or cannot lead to a solution, the algorithm backtracks by undoing the last decision and trying an alternative. This pruning of the search space is what makes backtracking efficient compared to brute-force enumeration.