1464. Maximum Product of Two Elements in an Array

https://leetcode.com/problems/maximum-product-of-two-elements-in-an-array

Description

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

Constraints:

• 2 <= nums.length <= 500

• 1 <= nums[i] <= 10^3

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