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Grokking the Coding Interview Patterns in JavaScript

Solution: Next Permutation

Discover how to compute the next lexicographical permutation of an integer array by using a two pointers technique. This lesson teaches you to identify the pivot and successor elements efficiently, swap them, and reverse the suffix in-place to achieve the next permutation using constant extra space.

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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  ...