Backtracking

Backtracking is the systematic exploration of all possible solutions through recursive search. It's essential for "find all" problems and constraint satisfaction.

What You'll Learn

  • Fundamentals: The choose-explore-unchoose pattern
  • The Template: A universal pattern for backtracking problems
  • Combinations & Subsets: Essential selection problems
  • Complex Constraints: Grid problems, N-Queens, and more

This technique appears in problems involving permutations, combinations, and any scenario where you need to explore all possibilities.

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