1464. Maximum Product of Two Elements in an Array

Given the array of integers nums, you will choose two different indices i and j of that array. Return the maximum value of (nums[i]-1)*(nums[j]-1).

• Example 1:
  Input: nums = [3,4,5,2]
  Output: 12
  Explanation: If you choose the indices i=1 and j=2 (indexed from 0), you will get the maximum value, that is, (nums[1]-1)(nums[2]-1) = (4-1)(5-1) = 3*4 = 12.

• Example 2:
  Input: nums = [1,5,4,5]
  Output: 16
  Explanation: Choosing the indices i=1 and j=3 (indexed from 0), you will get the maximum value of (5-1)*(5-1) = 16.

• Example 3:
  Input: nums = [3,7]
  Output: 12

var maxProduct = function(nums) {
  nums.sort((i, j) => j - i)
  return (nums[0]-1)*(nums[1]-1)
};