7. Reverse Integer

Practice Reverse Integer for free on NudgeCode: Medium, Bit Manipulation pattern. Write it in Python or JavaScript, run the tests in your browser, and ask for a hint when you are stuck.

Reverse the decimal digits of the signed 32-bit integer x, keeping its sign. If the reversed value falls outside the signed 32-bit range [-2^31, 2^31 - 1], return 0.

Example

x = 123   ->  321
x = -120  ->  -21
x = 1534236469  ->  0   (9646324351 is too big)

Constraints

• -2^31 <= x <= 2^31 - 1