Web Reference: Mar 22, 2026 · The next permutation is the next lexicographically greater arrangement of the array. If no such permutation exists (the array is in descending order), we rearrange it into the smallest possible order (ascending order). Jun 25, 2025 · Given an array of integers arr [] representing a permutation (i.e., all elements are unique and arranged in some order), find the next lexicographically greater permutation by rearranging the elements of the array. In-depth solution and explanation for LeetCode 31. Next Permutation in Python, Java, C++ and more. Intuitions, example walk through, and complexity analysis. Better than official and forum solutions.
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