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Grokking the Coding Interview Patterns in C#

Next Permutation

Explore how to rearrange an array to the next lexicographically greater permutation using the two-pointer method. Understand how to handle arrays in descending order by resetting them to the lowest order and practice implementing this in-place 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] ...