#7

Reverse Integer

expert · 1170 · lc medium +32 · verified · 31.6% accepted · 15,380 likes · top 9%

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Description

Reverse the decimal digits of signed 32-bit integer x. Return 0 if the reversed value falls outside the range [-231, 231 - 1]. Storing 64-bit integers is not permitted.

Example 1:

Input: x = 123
Output: 321

Example 2:

Input: x = -123
Output: -321

Example 3:

Input: x = 120
Output: 21

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