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Recursion vs Iteration: Choosing Your Path Like Neo in The Matrix

The Quest Begins (The "Why") I was knee‑deep in a coding interview when the interviewer tossed me a seemingly innocent problem: “Given a binary tree, return the sum of all its nodes.” My first…

  • Binary trees are recursive data structures mirroring the problem definition.
  • Recursion offers a one-to-one mapping between problem description and code, reducing bookkeeping.
  • Iterative approach required manual stack management, making code longer and less intuitive.

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