[백준 10809] 알파벳 찾기

문제

https://www.acmicpc.net/problem/10809

10809번: 알파벳 찾기

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내가 작성한 코드

import java.io.*;
import java.util.*;

public class 백준10809 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

        String alphabet = "abcdefghijklmnopqrstuvwxyz";
        int[] state = new int[26];

        for(int i = 0; i<26; i++){
            state[i] = -1;
        }

        String input = br.readLine();

        for(int i = 0; i<input.length(); i++){
            int a = alphabet.indexOf(input.charAt(i));
            if(state[a] == -1){
                state[a] = i;
            }
        }

        for(int i = 0; i<26; i++){
            bw.write(Integer.toString(state[i]) + " ");
        }
        bw.close();
    }
}