mediumNeetCode 150
Reverse Integer
Reverse digits of an integer. Return 0 if overflow. Example: 123 => 321, -123 => -321
Reverse Integer is one of those problems where a small math insight beats brute force. Interviewers love it because it reveals your turning constraints into math and your edge-case discipline. The trap is brute force: there's almost always a simplification hiding in the constraints.
Math & Geometry
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1Reverse Integermedium
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