Basic Calculator - LeetCode - FAANG+ Interview Prep - LeetCode & System Design Daily

🎙️ LeetCode 224 — Basic Calculator [HARD] | Stack-Based Evaluation & Recursion
In this deep-dive, we break down LeetCode 224: Basic Calculator, a notoriously tricky [HARD] problem that tests your understanding of recursion, expression parsing, and stack-based evaluation — all without using eval().

⚙️ Designed to sharpen your problem-solving skills for top-tier interviews at companies like Meta, Google, and Citadel.

🧠 Topics Covered:
 • Problem constraints & edge cases
 • How to parse nested parentheses
 • Recursive vs iterative stack solutions
 • Operator precedence & sign handling
 • Space-time complexity analysis
 • Common pitfalls & debugging strategies

🔍 If you’re aiming to master expression parsing or build intuition for handling complex nested state, this one’s for you.

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