1464. Maximum Product of Two Elements in an Array

Given a 2D integer array matrix, return the transpose of matrix.

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

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

/**
 * @param {number[]} nums
 * @return {number}
 */
var maxProduct = function (nums) {
  nums.sort((a, b) => a - b);
  const len = nums.length;
  return (nums[len - 1] - 1) * (nums[len - 2] - 1);
};