Program to find maximum product of two distinct elements from an array in Python

Suppose we have a list of numbers called nums, we have to find the largest product of two unique elements.

So, if the input is like nums = [8, -3, 1, -5], then the output will be 15, (-3)*(-5) = 15 which is maximum here.

To solve this, we will follow these steps −

• n := size of nums

• nums_sort := sort the list nums

• max_left := nums_sort[0] * nums_sort[1]

• max_right := nums_sort[n-1] * nums_sort[n-2]

• ans := maximum of max_left and max_right

• return ans

Example

Let us see the following implementation to get better understanding

def solve(nums):
   nums_sort = sorted(nums)
   max_left = nums_sort[0] * nums_sort[1]
   max_right = nums_sort[-1] * nums_sort[-2]

   ans = max(max_left, max_right)
   return ans

nums = [8, -3, 1, -5]
print(solve(nums))

Input

[8, -3, 1, -5]

Output

15

Arnab Chakraborty

Updated on: 12-Oct-2021

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