Completed Backtracking-3

[nikhilsaimarri]

No description provided.

[super30admin]

• N-Queens: Excellent job! The solution is efficient and correctly implemented. The use of sets for columns and diagonals is a great optimization.
• Word Search: The approach needs improvement. The problem is typically solved using DFS with backtracking, which is more efficient and simpler. The BFS approach with deep copying of visited arrays is not suitable for this problem due to its high time and space complexity. Consider revising the solution to use DFS with backtracking, where you mark cells as visited during the recursion and unmark them when backtracking.