Most developers prepare for interviews by practicing frameworks… But interviews still start with logic and problem-solving. And that’s where many candidates struggle. After taking multiple interviews, I’ve noticed something:

👉 Strong developers don’t just code

👉 They think clearly under pressure So here are some commonly asked logical + coding questions you should be ready for:

🧠 Logical Thinking Questions Reverse a string without using built-in functions Find missing number in an array (1 to N) Detect duplicate elements efficiently Check if a string is palindrome Find first non-repeating character Two Sum problem (target-based pairs) Valid parentheses problem Find intersection of two arrays FizzBuzz (simple but revealing) Find majority element in array

💻 Coding & Problem-Solving Implement a stack/queue from scratch LRU Cache (very common for senior roles) Binary search implementation Merge two sorted arrays Detect cycle in linked list Reverse a linked list Implement basic REST API (CRUD) Write SQL query for top N records Optimize a slow query Design a simple rate limiter

⚡ What Interviewers Actually Look For It’s NOT just the final answer.

We evaluate: ✔ How you approach the problem

✔ How you break it down step by step

✔ How you handle edge cases

✔ Code clarity and structure

✔ Your ability to explain your thinking

💡 Reality Check If you:

❌ Jump directly into coding

❌ Don’t clarify requirements

❌ Ignore edge cases You’ll likely struggle—even if you know the solution.

📌 How to Prepare Smartly Practice 3–5 problems daily Explain your solution out loud Focus on approach > syntax Revisit problems and optimize

📩 Want deeper preparation? If you need:

✔ Mock interviews

✔ Coding + system design roadmap

✔ Resume & LinkedIn optimization

👉 Connect with me: https://lnkd.in/gbqt23aM