Status: IN
There is no repo-wide convention on input mutation: some solutions mutate in-place for space efficiency (array-partition, assign-cookies) while others defensively copy (array-transformation); callers must check each solution individually.
Source: entries/2026/06/06/array-partition-solution.md, entries/2026/06/06/array-transformation-solution.md, entries/2026/06/06/assign-cookies-solution.md
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