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Grokking the Coding Interview Patterns

Solution: Next Permutation

Explore the next permutation problem where you rearrange an array to its immediate next lexicographical order using a two pointers approach. Understand how to identify pivot and successor elements for swapping, and reverse the suffix to achieve the minimal larger permutation. This lesson provides an in-place solution with O(n) time and O(1) space complexity, helping you master a key coding interview pattern.

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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  ...