_04_find_maximum_of_array_element.js

// 4. Find maximum of array element
/**
 * Pattern Used: Linear Scan / Running Maximum
 * Why this pattern: The maximum can be tracked with a single variable updated during one traversal, avoiding the need to sort the array.
 *
 * Interview Scenario:
 * "A classic first-round filter question at startups: 'Find the highest transaction amount from today's payments array without sorting.' Establishes baseline coding hygiene before deeper questions."
 *
 * Example:
 *   Input:  [3, 7, 2, 9, 4]
 *   Output: 9
 */