c3-34 case16 改进十进制转十六进制（上）

public class Case16 {
    public static void main(String [] args){
        int number = 245;
        int shang = number/16;//15
        int yu = number%16;//5
        char result;
        String tex = "";
        if(yu<9){
            result = (char)('0'+(yu-0));
        }else{
           result =(char)('A'+(yu-10));
        }
        tex = result + tex;

        yu = shang%16;
        shang = shang/16;
        if(yu<9){
            result = (char)('0'+(yu-0));

        }else{
            result =(char) ('A'+(yu-10));
        }
        tex = result +tex;
        System.out.println("245的十六进制是："+tex);
    }
}

//优版
import java.util.Scanner;
public class Case17 {
    public static void main(String [] args){
        Scanner in = new Scanner (System.in);
        System.out.println("请输入number的十进制数");
        int number = in.nextInt();
        int shang = number;
        String tex = "";
        int yu;
        while(shang!=0){
                yu = shang%16;
                shang = shang/16;
                char result;
                if(yu<9){
                    result = (char)('0'+(yu));
                }else{
                    result = (char)('A'+(yu-10));
                }
                tex = result + tex;
            }
        System.out.println(number+"的十六进制形式是："+tex);
    }
}