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Grokking the Coding Interview Patterns in Python

Solution: Reverse Integer

Explore how to reverse the digits of a 32-bit signed integer in Python. Understand the step-by-step approach to handle negative numbers, detect overflow, and ensure results stay within valid integer ranges, all with optimal time and constant space complexity.

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Statement

Given a 32-bit signed integer num, reverse its digits and return the result. If the reversed number exceeds the 32-bit signed integer range [−231,231−1][−2^{31},2^{31}−1] ...