题解 | #安置路灯#
安置路灯
https://www.nowcoder.com/practice/3a3577b9d3294fb7845b96a9cd2e099c
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); // 注意 hasNext 和 hasNextLine 的区别 int t = in.nextInt(); while (t-- > 0) { int n = in.nextInt(); String s = in.next(); int i = 0; int count = 0; while (i < n) { if (s.charAt(i) == '.') { count++; i += 3; } else { i++; } } System.out.println(count); } in.close(); } }