문제로

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못품

답안1

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class Solution {
    public boolean isPalindrome (int x){
        if(x < 0) {
            return false;
        }

        long reversed = 0;
        long temp = x;

        while(temp != 0) {
            int digit = (int) (temp % 10);
            reversed = reversed * 10 + digit;
            temp /= 10; 
        }

        return (x = reversed);
    }
}

답안2

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class Solution {
    public boolean isPalindrome (int x){
        if(x < 0 || x != 0 && x % 10 == 0) {
            return false;
        }

        long reversed = 0;

        while(x > reversed) {
            reversed = reversed * 10 + x % 10;
            x /= 10;
        }

        return (x == reversed) || (x == reversed / 10);
    }
}