The algorithm: Start with an empty current permutation If current length equals n, add to results For each element in nums: - If not visited: - Mark as visited - Add to current permutation - Recurse - Remove from current (backtrack) - Mark as not visited The visited array prevents you from using the same element twice.
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$ curl repovive.com/roadmaps/maang-interview-prep/backtracking/permutations-solution
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