Count Binary Substrings

Problem Overview

• Count substrings in a binary string that have equal numbers of 0s and 1s, with all 0s together and all 1s together.
• Input: string s containing only '0' and '1'; Output: integer count of qualifying contiguous substrings; duplicates and overlaps count.
• Domain: string processing and binary data; a common coding interview problem.
• Implement getSubstringCount(s) to answer this interview question.