9. Palindrome Number
![](https://img2020.cnblogs.com/blog/1014744/202109/1014744-20210928194524358-2147328993.png)
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
class Solution { public boolean isPalindrome(int x) { String str = String.valueOf(x); int start = 0; int end = str.length() - 1; while(start < end){ if(str.charAt(start++) != str.charAt(end--)) return false; } return true; } }