--- tags: Cmoney_Java題目 --- Java_Cmoney_ft9107_會不斷讀數字的機器 === ![](https://i.imgur.com/mdxUThH.png) 1.主程式 --- 將 int 轉成 String ,再使用`.contains()`看有沒有這個數字 ```java= import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int n = sc.nextInt(); for (int i = 0; i <= n; i++) { String s = Integer.toString(i); if (s.contains("1")) continue; else System.out.print(i+" "); } } } ```