⚠️ GOOD or BAD String Checker with Wildcards | C++ Code | Vowels & Consonants Rule

Learn how to classify a string as GOOD or BAD based on consecutive vowels and consonants, even with wildcard characters '?'. This efficient C++ solution considers worst-case replacements to handle '?' characters smartly.

📌 **Problem Statement:**
If a string has more than 3 consonants or more than 5 vowels **in a row**, it's BAD. Wildcard `'?'` can act as either vowel or consonant.

💡 **Examples:**
➤ Input: `"aeioup??"` → Output: `1` (GOOD)
➤ Input: `"bcdaeiou??"` → Output: `0` (BAD)

🧠 Time Complexity: O(n)
🛠️ Constant space, linear scan

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