Given a circular array nums, find the maximum absolute difference between adjacent elements. Note: In a circular array, the first and last elements are adjacent.

maxAdjacentDistance.js

/**
 * @param {number[]} nums
 * @return {number}
 */
var maxAdjacentDistance = function(nums) {
    if (nums.length < 2) return 0; // If there's only one element, no adjacent pairs exist.

    let maxDiff = 0; // Initialize a variable to store the maximum absolute difference

    for (let i = 0; i < nums.length; i++) {
        // Compute the absolute difference between the current element and the next one.
        // Using modulus (%) ensures that the last element wraps around to the first element.
        let diff = Math.abs(nums[i] - nums[(i + 1) % nums.length]);

        // Update maxDiff if the current difference is greater
        maxDiff = Math.max(maxDiff, diff);
    }

    return maxDiff; // Return the maximum absolute difference found
};