# Expression Add Operators

Interview note (expr-ops) — practice write-up.

## Approach
Walk the inputs carefully, pick the right structure, then verify edge cases.
Complexity target: linear or n log n when possible.

## Why this matters in interviews
Hiring loops reward clear tradeoff talk. A calm plan beats clever one-liners.

## Practice tip
If you freeze on a follow-up, restate constraints out loud and re-derive from first principles.

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