I am not able to solve it please help. Thanks in advance
Given an array with min length of 8, choose 2 groups of 2 numbers such that in each group, the two numbers must not be adjacent. Multiply the numbers in both groups and subtract one from other. Maximize this result Ex: 2,1,3,4,8,6,7,9 2 groups → 1,4 & 6,9 → Diff = 54-4 = 50