Biggest Number From Digits

There is an array, named 'digits', consisting of N digits. Choose at most three digits (not necessarily adjacent) and merge them into a new integer without changing the order of the digits. What is the biggest number that can be obtained this way?

Write a function:

biggestNumberFromDigits

that, given an array of N digits, returns the biggest number that can be built.

Examples:

1. Given digits = [7, 2, 3, 3, 4, 9], the function should return 749.
2. Given digits = [0, 0, 5, 7], the function should return 57.

Assume that:

• N is an integer within the range [3..50];
• each element of array named 'digits', is an integer within the range [0..9].

In your solution, focus on correctness. The performance of your solution will not be the focus of the assessment.

Memo 🐌 On the source image it says the question is an "exercise", I've never done Google assessment before, so I am not sure if it is just a warm up exercie before the actual test.