LeetCode – 9. Palindrome Number

2017-08-09 • Java coding practice log (2017) • 2743 次阅读 • No one has discussed this yet. • 147 Like

Determine whether an integer is a palindrome. Do this without extra space.

This problem is actually quite boring; you can't use extra space. I can't figure out how to avoid using extra space. Hopefully, some expert can point it out.

public class Solution { public boolean isPalindrome(int x) { if(x<0) return false; String s = Integer.toString(x); int j=s.length() -1; int i = 0; while(i This siteOriginal articleAll follow "Attribution-NonCommercial-ShareAlike 4.0 License (CC BY-NC-SA 4.0)Please retain the following annotations when sharing or adapting:
 Original author:Jake Tao,source:「LeetCode – 9. Palindrome Number」

LeetCode string

0 0 147

About the author

Jake Tao

645 article

335 Comment

Jake, a native of Hangzhou, studied and worked in the United States for many years. He has experience in technology development, team management, and core business decision-making at Amazon, Shopify, Capital One, Grab, and Oracle, covering advertising technology, payment systems, fintech, and data platforms. He is also seeking new entrepreneurial opportunities in AI applications and cross-border e-commerce. Passionate about creating and practicing from scratch, he welcomes discussion if you share similar interests!