Leetcodes Solutions 9 Palindrome Number

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

思路1

class Solution{public: bool isPalindrome(int x){ if(x < 0 || (x != 0 && x % 10 == 0)) return false; int sum = 0; while(x > sum){ sum = sum * 10 + x % 10; x = x / 10; } return (x == sum)||(x == sum / 10); //left operand is true when even, right operand is true when odd }};

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