🚀 How to Solve Arrays and Hashing Problems in Data Structure?

Arrays and Hashing are among the most important topics in Data Structures & Algorithms (DSA) and are frequently asked in coding interviews at companies like FAANG, startups, and product-based companies. Here’s a simple roadmap to master them 👇 📌 1. Understand the Problem Type Before coding, identify the pattern: ✅ Searching elements ✅ Frequency counting ✅ Duplicate detection ✅ Pair/target sum problems ✅ Prefix sum or subarray problems ✅ Grouping & mapping 📌 2. Master Array Basics Arra