题解 | 进制转换

import java.util.Scanner;
public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        if(s.startsWith("0x")){
            s  = s.substring(2);
        }else if(s.endsWith("h")){
            s  = s.substring(0,s.length()-1);
        }
        int result  = Integer.parseInt(s,16);
        System.out.println(result);
    }
}