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DIY: Monotonic Array

Understand how to implement an efficient Java function to check if an array is monotonic, meaning it is either consistently increasing or decreasing. This lesson helps you build skills to analyze array sequences and apply problem-solving approaches useful in coding interviews.

Problem statement

An array is monotonic if it is either monotone increasing or monotone decreasing.

An array, arr, is monotone increasing if arr[i] <= arr[i + 1] for every element at each index i. ...