ITSA Basic 题目5 十进制转二进制 (Java)

import java.util.Scanner;public class Main {public static void main(String[] args) {Scanner sc = new Scanner(System.in);while(sc.hasNext()) {int input = sc.nextInt();if (input < 0) input += 256;int num[] = new int[8];for(int i=7; i>=0; i--) {num[i] = input % 2;input /= 2;}for(int j=0; j<8; j++) {if(j == 7) System.out.println(num[j]);elseSystem.out.print(num[j]);}}}}