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35 lines
678 B
35 lines
678 B
Given an integer x, return true if x is palindrome integer.
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An integer is a palindrome when it reads the same backward as forward.
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For example, 121 is a palindrome while 123 is not.
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Example 1:
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Input: x = 121
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Output: true
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Explanation: 121 reads as 121 from left to right and from right to left.
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Example 2:
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Input: x = -121
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Output: false
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Explanation: From left to right, it reads -121. From right to left, it becomes 121-. Therefore it is not a palindrome.
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Example 3:
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Input: x = 10
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Output: false
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Explanation: Reads 01 from right to left. Therefore it is not a palindrome.
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Constraints:
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-231 <= x <= 231 - 1
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https://leetcode.com/problems/palindrome-number/
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