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Java Solution for LeetCode algorithm problems, continually updating
7\. Reverse Integer
Medium
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:**
* -231 <= x <= 231 - 1