[LeetCode, 리트코드] Palindrome Number

1. Problem

Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward.

입력된 정수가 팰린드롬인지 판명하라. 앞뒤로 읽어도 똑같이 읽힐 때 팰린드롬이라 한다.

Example 1:

Input: 121
Output: true

Example 2:

Input: -121
Output: false
Explanation: From left to right, it reads -121. From right to left, it becomes 121-. Therefore it is not a palindrome.

Example 3:

Input: 10
Output: false
Explanation: Reads 01 from right to left. Therefore it is not a palindrome.

2. Solution

기본적인 팰린드롬 문제

3. What I solved

class Solution {
public:
    bool isPalindrome(int x) {
        if(x < 0) 
            return false;
        string x_s = to_string(x);
        string reverse_s = x_s;
        
        reverse(reverse_s.begin(), reverse_s.end());
        
        return x_s == reverse_s ? true : false;
    }
};