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Grokking the Coding Interview Patterns

Solution: Next Permutation

Understand how to generate the next permutation of an array using the two pointers technique. This lesson guides you step-by-step to identify the pivot and successor elements, swap them, and reverse the suffix for an in-place and constant space solution.

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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  ...