알고리즘 입문(Java) - String - 6.중복문자제거

 

(풀이)

 

import java.util.*;
class Main {
    public String solution(String str){
        String answer="";
        for(int i=0; i<str.length(); i++){
            //System.out.println(str.charAt(i)+" "+i+" "+str.indexOf(str.charAt(i)));
            if(str.indexOf(str.charAt(i))==i) answer+=str.charAt(i);
        }
        return answer;
    }

    public static void main(String[] args){
        Main T = new Main();
        Scanner kb = new Scanner(System.in);
        String str=kb.next();
        System.out.print(T.solution(str));
    }
}