[LeetCode] 7. Reverse Integer (JAVA)

[LeetCode] 7. Reverse Integer (JAVA)

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 [-231, 231 - 1], then return 0.

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

Example 1:

Input: x = 123 Output: 321

Example 2:

Input: x = -123 Output: -321

Example 3:

Input: x = 120 Output: 21

Example 4:

Input: x = 0 Output: 0

Constraints:

from http://erjuer.tistory.com/97 by ccl(S) rewrite - 2021-12-12 07:02:03