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+# LeetCode Problem: 3442. Maximum Difference Between Even and Odd Frequency I
+
+## 🧠 Problem Statement
+
+You are given a string `s` consisting of lowercase English letters.  
+Your task is to find the **maximum difference** `diff = a1 - a2` between the frequency of characters `a1` and `a2` such that:
+
+- `a1` has an **odd frequency** in the string.
+- `a2` has an **even frequency** in the string.
+
+Return this **maximum difference**.
+
+---
+
+### ✅ Constraints:
+
+- `3 <= s.length <= 100`
+- `s` consists only of lowercase English letters.
+- `s` contains **at least one character with an odd frequency** and **one with an even frequency**.
+
+---
+
+## 💡 Examples
+
+### Example 1:
+
+### Input: 
+```python
+s = "aaaaabbc"
+```
+### Output: 
+```
+3
+```
+### Explanation:
+
+  + `'a'` appears 5 times (odd)
+  
+  + `'b'` appears 2 times (even)
+  
+  + Maximum difference = 5 - 2 = 3
+
+  ---
+
+## 🧮 Solution Overview
+
+1. Count the frequency of each character using `collections.Counter`.
+2. Filter out frequencies that are **odd** and **even**.
+3. Return the difference between:
+   - The **maximum** odd frequency
+   - The **minimum** even frequency
+
+---
+### ✨ Credit
+Prepared by: Muawiya (Coding Moves)
+Project Type: LeetCode Problem Solution
+Language: Python
+
+---