Determine whether an integer is a palindrome. Do this without extra space. 解题思路一: 双指针法,逐位判断 Java代码如下: static public boolean isPalindrome(int x) { if (x < 0) return false; int temp = x,beginIndex = 0, endIndex = 0; while (temp >= 10) { temp /= 10; en…
Determine whether an integer is a palindrome. Do this without extra space. Some hints: Could negative integers be palindromes? (ie, -1) If you are thinking of converting the integer to string, note the restriction of using extra space. You could also…
public class Solution { public boolean isPalindrome(int x) { if (x<0 || (x!=0 && x%10==0)) return false; int div = 1; while(x/10>=div) div *= 10; while(x>0) { if(x/div!=x%10) return false; x = (x%div)/10; div /= 100; } return true; } }…
Determine whether an integer is a palindrome. Do this without extra space. Some hints: Could negative integers be palindromes? (ie, -1) If you are thinking of converting the integer to string, note the restriction of using extra space. You could also…
Leetcode Solutions Language: javascript c mysql Last updated: 2019-01-04 https://github.com/nusr/leetcode # Problems Solutions Difficulty Acceptance Paid-Only 001 two-sum c,javascript Easy 39.69% No 002 add-two-numbers javascript Medium 30.01% No 007…
我现在在做一个叫<leetbook>的开源书项目,把解题思路都同步更新到github上了,需要的同学可以去看看 地址:https://github.com/hk029/leetcode 这个是书的地址:https://hk029.gitbooks.io/leetbook/ 009. Palindrome Number[E] 问题: Determine whether an integer is a palindrome. Do this without extra space. 思路 这里说不…
