給定一個 32 位有符號整數，將整數中的數字進行反轉。

我的程式碼：

public class Solution2 {
    public int reverse(int x) {
        Integer in = new Integer(x);
        String s = in.toString();
        String result = null;
        Integer result1 = null;
        if (s.charAt(0) != '-') {
            StringBuilder sb = new StringBuilder(s);
            result = sb.reverse().toString();
            System.out.println(result);
            try {
                result1 = new Integer(result);
            } catch (NumberFormatException e) {
                e.printStackTrace();
                return 0;
            }
        } else {
            String s2 = s.substring(1,s.length());
            StringBuilder sb = new StringBuilder(s2);
            result = "-".concat(sb.reverse().toString());
            System.out.println(result);
            try {
                result1 = new Integer(result);
            } catch (NumberFormatException e) {
                e.printStackTrace();
                return 0;
            }

        }
        return result1;
    }

    public static void main(String[] args) {
        int x = 1534236469;
        new Solution2().reverse(x);
    }
}