Question 1

What is backtracking?

Accepted Answer

Backtracking is a general algorithmic technique for solving problems recursively by trying to build a solution incrementally. When it's determined that a partial solution cannot be completed, the algorithm backtracks to a previous step and tries a different path.

Question 2

How do you solve the N-Queens problem using backtracking?

Accepted Answer

The N-Queens problem is solved by placing one queen at a time in a column, starting from the leftmost column. For each placement, we check if it's safe (i.e., not attacked by other queens). If it is, we recursively try to place the next queen. If a placement leads to no solution, we backtrack and try a different row in the current column.

Backtracking Interview Questions

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