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Reverse Integer | CodeTutor

Reverse Integer

Easy

Problem

Given a signed 32-bit integer x, return x with its digits reversed. If reversing x causes the value to go outside the signed 32-bit integer range [-2^31, 2^31 - 1], then return 0.

Assume the environment does not allow you to store 64-bit integers (signed or unsigned).

Constraints

-2^31 <= x <= 2^31 - 1

Examples

Input: x = 123

Output: 321

The digits of 123 reversed give 321.

Input: x = -123

Output: -321

The digits of -123 reversed give -321. The negative sign is preserved.

Input: x = 120

Output: 21

Trailing zeros in the original number become leading zeros after reversal and are dropped.

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