题解 | #表示数字#
表示数字
https://www.nowcoder.com/practice/637062df51674de8ba464e792d1a0ac6
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 in = new Scanner(System.in); String source = in.nextLine(); boolean open = true; StringBuilder result = new StringBuilder(); for (int i = 0; i < source.length(); i++) { char c = source.charAt(i); boolean b = c >= '0' && c <= '9'; if (b && open) { result.append("*"); open = false; } else if (!b && !open) { result.append("*"); open = true; } result.append(c); if (i == source.length() - 1 && b) { result.append("*"); } } System.out.println(result); } }