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Solution: Next Permutation

Explore the two pointers technique to solve the next permutation problem efficiently. Learn to identify the pivot and successor elements and rearrange the array in-place to form the next lexicographically greater sequence. This lesson helps you understand the step-by-step process to implement the algorithm with constant extra memory.

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Statement

Your task is to rearrange an array, nums, containing positive integers to form the next lexicographically greater permutationA permutation of an array of integers refers to any ordering of its elements into a sequence or linear arrangement.. This means finding the next permutation in the sequence of all possible arrangements sorted in dictionary order.

For example, given the array [4,5,6][4, 5, 6], the next permutation is [4,6,5][4, 6, 5]. In the same way, [5,6,4][5, 6, 4] becomes [6,4,5][6, 4, 5] ...