Official algorithmic problem description and constraints.
You are given an array π΄ of length π, and a positive integer πΎ.
It is guaranteed that 1β€π΄πβ€πΎ for every index π from 1 to π.
You can do the following at most once:
Find the maximum possible value of the sum of adjacent differences of π΄ after performing this operation at most once.
Detailed video explanations, mathematical intuition, and clean C++ implementation code.
