LeetCode 2235: Add Two Integers

Meta Data

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Difficulty: easy First Attempt: 2025-12-17

• Submissions: Accepted (Python) → Compile Error (C++) → Accepted (C++)

Approach

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Return num1 + num2. I used this one to practice C++ syntax.

My Attempts

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The first C++ version, return num1 + num2, was missing a semicolon: Compile Error.

Solution

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class Solution:
    def sum(self, num1: int, num2: int) -> int:
        return num1 + num2

Complexity

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Time O(1), space O(1).

Mistakes to Avoid

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• Switching from Python to C++, statements need a trailing semicolon.

Interview Explanation

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Return the sum directly. The value range is tiny, so there is no overflow. Time O(1).