2873.js

/** ------------------------------------------------------------------------------
 * 
 * 2873. Maximum Value of an Ordered Triplet I
 * Topics: Array
 * https://leetcode.com/problems/maximum-value-of-an-ordered-triplet-i/description/?envType=daily-question&envId=2025-04-02
 * 
 ------------------------------------------------------------------------------ */
var maximumTripletValue = function (nums) {
  let n = nums.length
  let res = 0
  for (let k = 2; k < n; k++) {
    let maxPrefix = nums[0]
    for (let j = 1; j < k; j++) {
      res = Math.max(res, (maxPrefix - nums[j]) * nums[k])
      maxPrefix = Math.max(maxPrefix, nums[j])
    }
  }
  return res
}

console.log(maximumTripletValue([1, 2, 3]))