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Generate all distinct permutations of an array that may contain duplicate values. The core challenge is to exhaustively build permutations while avoiding duplicate results (commonly handled by pruning duplicates via sorting or using frequency counts), with n ≤ 8.
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Microsoft
Leetcode 47. Permutations II
Reported Apr 6, 2026 · 1 source report
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Source snapshot: Nov 12, 2026
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