9. Palindrome Number

难度: Easy

题目描述

Given an integer x, return true if x is a palindrome, and false otherwise.

 

Example 1:

Input: x = 121
Output: true
Explanation: 121 reads as 121 from left to right and from right to left.

Example 2:

Input: x = -121
Output: false
Explanation: From left to right, it reads -121. From right to left, it becomes 121-. Therefore it is not a palindrome.

Example 3:

Input: x = 10
Output: false
Explanation: Reads 01 from right to left. Therefore it is not a palindrome.

 

Constraints:

• -231 <= x <= 231 - 1

 

Follow up: Could you solve it without converting the integer to a string?

解题思路

代码实现

解决方案

java

func isPalindrome(x int) bool {
	str := strconv.Itoa(x)
	bs := []rune(str)
	slices.Reverse(bs)
	return str == string(bs)

}