Problem

You are given a list of numbers. Find the two numbers in the list that have the greatest product, and return that product.
For example, given the list [1, 2, 3, 4], you should return 24 (which is 6 * 4).

Solution

# Solution:
# The optimal solution is to sort the list and then multiply the last two numbers.
# This is optimal because the last two numbers will be the largest two numbers in the list.
# This is because the list is sorted in ascending order.

def find_greatest_product(list):
    list.sort()
    return list[-1] * list[-2]

print(find_greatest_product([1, 2, 3, 4]))