leetcode Palindrome Number 009
来源：互联网 发布：树莓派上编程 编辑：程序博客网 时间：2024/05/29 18:46
Determine whether an integer is a palindrome. Do this without extra space.
#include <iostream>#include <vector>#include <algorithm>using namespace std;class Solution {public:bool isPalindrome(int x) {const int MAXX=0x7fffffff;if (x < 0) {return false;}int sum = 0, isPalin = 1, copy=x;while(x > 0) {int cnt = x%10;if(MAXX/10 < sum) {isPalin=0;break;}sum = sum*10+cnt;x = x/10;if(sum < 0) {isPalin = 0;break;}}if(isPalin == 1) {if(copy == sum) isPalin = 1;else isPalin = 0;}return isPalin == 1;}} 0 0
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