Brian Geisel on Instagram: "Instead, you need a one-way hashing algorithm. 🤔 How Does It Work? Remember learning long division in second grade? Think of it this way: 7 ÷ 3 = 2 R 1 If I told you the answer is “2 remainder 1,” you can’t determine the original numbers. It could be: 13 ÷ 6 = 2 R 1 This concept is similar to password hashing but with much larger numbers and complex math. Once hashed, you can’t reverse it to find the original password. So, keep your data secure. Hash, don’t encrypt!

Govind Pothuraju on Instagram: "Day 20/200: How HashMap Works Internally HashMap is one of the most powerful data structures in coding interviews & real-world systems. Here’s how it works under the hood: ✅ Hashing: Key → Hash function → Index in array (bucket). ✅ Collision handling: Chaining (LinkedList/Tree in Java) or Open addressing. ✅ Time complexity: O(1) average for put/get, O(n) worst-case. ⚡ Mastering HashMap internals is a must for interviews — it shows depth, not just coding ability. F