Palindrome Number
给一个数字, 问是不是回文数字. 写一个数字倒转的方法, 然后看一下即可.
public class Solution {
public boolean isPalindrome(int x) {
if(x < 0)
return false;
return x == rev(x);
}
public int rev(int x) {
int res = 0;
while(x != 0){
res = res * 10 + x % 10;
x = x / 10;
}
return res;
}
}