Reverse Integer: coding question

Problem

You get a signed 32-bit integer x. A signed 32-bit integer is a whole number from -2^31 to 2^31 - 1.

Reverse the order of the digits of x, and keep the sign of x. Zeros at the end of x disappear, because they move to the start of the result.

If the result is outside the signed 32-bit range, return 0. Assume that your environment cannot store 64-bit integers.

Input:: x = 2000000009
Output:: 0
Explanation:: The reversed value 9000000002 is larger than 2^31 - 1, so the answer is 0.

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Problem

You get a signed 32-bit integer x. A signed 32-bit integer is a whole number from -2^31 to 2^31 - 1.

Reverse the order of the digits of x, and keep the sign of x. Zeros at the end of x disappear, because they move to the start of the result.

If the result is outside the signed 32-bit range, return 0. Assume that your environment cannot store 64-bit integers.

Input:: x = 2000000009
Output:: 0
Explanation:: The reversed value 9000000002 is larger than 2^31 - 1, so the answer is 0.

SysRound wrote this statement. A reference solution checks every example.