Solve: Binary String Is Balanced

Created By: Pranav Narayanan

/ Version: 2025.2.0

Write a method isBalanced that returns true if the passed String is balanced. A String is balanced if in every substring, the absolute difference between the number of 1s and 0s is at most 2. You need to assert that the passed value is not null, but otherwise it will only contain 1s and 0s.