Medium
Quiz
#7 Reverse Integer
APPROACH
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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What is the optimal approach for this problem?