[백준,BOJ 10809] 알파벳 찾기(JAVA 구현)

-해법 import java.util.Scanner; import java.util.Arrays; public class Main{ public static void main(String[] args){ Scanner in = new Scanner(System.in); String s = in.next(); int arr[] = new int[26]; Arrays.fill(arr, -1); for(int i = 0; i