题解 | 十进制数转二进制数

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int num = scanner.nextInt();

        //write your code here......
        String str = "";
        if(num != 0){
            while(num > 0){
            int temp = num % 2;
            str = temp + str;
            num /= 2;
            }
        }else{
            str = "" + num;
        }

        System.out.println(str);
    }
}