Given an array of distinct integers, return all possible permutations. Example: nums = [,,]. Output: [[,,], [,,], [,,], [,,], [,,], [,,]]. Order matters here. [,] and [,] are different permutations. An array of n elements has n! permutations.
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$ curl repovive.com/roadmaps/maang-interview-prep/backtracking/problem-permutations
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