You are given an array of whole numbers (integers starting at 1 that are positive) as an argument. Return the smallest whole number that is not present in the array.

Requirements

• Must return an integer

Example #1

solve([10, 4, 1, 7, 6, 8, 5, 3, 4, 10])
> 2

Example #2

solve([10, 2, 4, 1, 7, 6, 8, 5, 3, 4, 10])
> 9