#1464

Maximum Product of Two Elements in an Array

newbie · 140 · lc easy +13 · verified · 83.5% accepted · 2,613 likes · top 95%

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Description

Given an integer array nums, choose two distinct indices i and j to maximize the expression (nums[i]-1)*(nums[j]-1). Return that maximum value.

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

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