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All topics›JavaScript›Arrays & strings

Rotate Array by K

intermediatelayer B2 · Arrays & strings5 tests

Rotate nums to the right by k steps, in place. Element at index i ends up at index (i + k) % n.

  • Mutate the array itself; the return value is ignored
  • k may be larger than the array length
  • Target O(1) extra space — a triple reversal does it

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