package practice2_hashing;

import java.util.HashMap;

public class Question1 {

public int solution(String s){

int answer = -1;

HashMap<Character, Integer> hs = new HashMap<>();

for (char x : s.toCharArray()) {

hs.put(x, hs.getOrDefault(x, 0) + 1);

}

for (int i = 0; i < s.length(); i++) {

if(hs.get(s.charAt(i)) == 1) { // 첫 번째로 등장하는 문자를 찾았다면

answer = i + 1; // answer를 현재 인덱스로 설정하고,

break; // 루프를 멈춥니다.

}

}

return answer;

}

public static void main(String[] args){

Question1 T = new Question1();

System.out.println(T.solution("statitsics"));

System.out.println(T.solution("aabb"));

System.out.println(T.solution("stringshowtime"));

System.out.println(T.solution("abcdeabcdfg"));

}

}