- import java.util.Scanner;
- public class SystemConvert {
- public static void main(String[] args) {
- Scanner scanner = new Scanner(System.in);
- System.out.println("please input a number:");
- int numb = scanner.nextInt();
- System.out.println("choose a way:\\n输入1,表示10进制转2进制;\\n"
- + "输入2,表示2进制转10进制;\\n");
- int input = scanner.nextInt();
- String s = "";
- switch (input) {
- case 1:
- for (int i = numb; i > 0; i /= 2)
- s += i % 2;
- break;
- case 2:
- int k = 0,
- temp = 0;
- for (int i = numb; i > 0; i /= 10) {
- temp += (i % 10) * Math.pow(2, k);
- k++;
- }
- s = "" + temp;
- break;
- default:
- System.out.println("Wrong input!");
- }
- System.out.println(s);
- }
- }
- //该片段来自于http://www.codesnippet.cn/detail/2108201513511.html
来源: http://www.codesnippet.cn/detail/2108201513511.html