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Grokking the Coding Interview Patterns in C#

Solution: Next Permutation

Explore the two-pointer approach to compute the next lexicographically greater permutation of an array in-place. This lesson guides you to identify the pivot and successor elements, perform swaps, and reverse the suffix to achieve the smallest next permutation efficiently using a constant amount of 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  ...