题解 | 字符串哈希
字符串哈希
https://www.nowcoder.com/practice/dadbd37fee7c43f0ae407db11b16b4bf
import java.util.*;
// 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);
int n = in.nextInt();
HashSet<String> set = new HashSet<>();
in.nextLine();
while (n-->0) {
set.add(in.nextLine());
}
System.out.println(set.size());
}
}