HDOJ 2051 Bitset

Problem Description
Give you a number on base ten,you should output it on base two.(0 < n < 1000)

Input
For each case there is a postive number n on base ten, end of file.

Output
For each case output a number on base two.

Sample Input
1
2
3

Sample Output
1
10
11

就是将一个十进制的数按二进制输出。
JAVA中直接调用Integer.toBinaryString(int i)；
以二进制（基数 2）无符号整数形式返回一个整数参数的字符串表示形式。

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while(sc.hasNext()){
            int n = sc.nextInt();

            System.out.println(Integer.toBinaryString(n));

        }


    }

}