HashMap in Java
HashMap in Java
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Anurag on Instagram: "⚙️ HashMap Internal Working (Java) • 🧮 Uses hashCode() to find bucket • 📍 Index = hash % size • 🔗 Collision → LinkedList • 🌳 Too many collisions → Red-Black Tree (Java 8+) Search Time Complexity: • ⚡ Average: O(1) • 🚨 Worst: O(log n) 📌 Summary: HashMap stores data in buckets using hashing. It resolves collisions using LinkedList and optimizes performance with trees when needed — that’s why it’s fast! 🚀 Topics Touched: [Java DSA, LLD, Map, HashMap, LinkedHashMap, Tree
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