题解 | #求最大连续bit数#

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()){
            int in = sc.nextInt();
            String str = Integer.toBinaryString(in);

            StringBuffer sb = new StringBuffer();
            for (int i = 0; i < str.length(); i++) {
                sb.append("1");
            }
            String temp = sb.toString();

            for (int i = temp.length(); i >0; i--) {
                if (str.contains(temp.substring(0,i))){
                    System.out.println(temp.substring(0,i).length());
                    break;
                }
            }
        }
    }
}