[백준] 8538 Bałagan i Stonki - Data Structure / Java

• 문제 링크

https://www.acmicpc.net/problem/8538

 

• 풀이 코드

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.HashSet;
import java.util.Set;

public class Main {

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

        Set<String> set = new HashSet<>();
        StringBuilder sb = new StringBuilder();

        int n = Integer.parseInt(br.readLine());
        while (n-- > 0) {
            for (char c : br.readLine().toCharArray()) if (c != '-') sb.append(c < 'a' ? c : c - ' ');
            set.add(sb.toString());
            sb.setLength(0);
        }

        bw.write(String.valueOf(set.size()));
        bw.flush();
    }

}