백준 10809 java 자바

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

10809번: 알파벳 찾기

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import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.util.Arrays;
import java.util.StringTokenizer;

public class Main {
    
    public static String S;
    public static int[] a;
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        S = br.readLine();
        a= new int[26];
        Arrays.fill(a, -1);
      //97~122
        for(int i=0;i<S.length();i++) {
        	if(a[S.charAt(i)-97]==-1) {
        		a[S.charAt(i)-97]=i;
        	}
        }
        for(int i=0;i<26;i++)
        	System.out.print(a[i]+" ");
    }
}