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Next Permutation

advancedlayer B4 · Two pointers5 tests

Rearrange nums in place into the next lexicographically larger permutation of the same values. If the array is already the largest possible arrangement, rearrange it into the smallest (fully ascending) one.

  • Mutate the array; the return value is ignored
  • Use O(1) extra space — no generating all permutations
  • Duplicate values must be handled correctly

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