Sort Array by Frequency in C++ | Frequency Sorting with Custom Comparator | Coding Interview Que

Learn how to sort an array by the frequency of elements using C++! In this video, we solve a popular coding interview question where elements with higher frequency come first, and if two elements have the same frequency, the smaller number comes first.

This problem is commonly asked in technical interviews and competitive programming. We use a hash map and a custom comparator for sorting.

🔹 Language: C++
🔹 Concept: Hash Map, Sorting with Custom Comparator
🔹 Ideal For: Beginners to Advanced C++ coders, Interview Preparation

📌 Example:
Input: `5 5 4 6 4`
Output: `4 4 5 5 6`

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