Envío 2930

Problema 0x5c - Decir si hay una letra repetida

Autor: hamorillo
Fecha: 2021-02-11 12:57:20 UTC (Hace casi 4 años)

Caso #	Resultado	Tiempo	Memoria
#1	Correcto Note: Main.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details.	0.155 s	16 KBi
#2	Correcto Note: Main.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details.	0.151 s	15 KBi
#3	Correcto Note: Main.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details.	0.152 s	16 KBi
#4	Correcto Note: Main.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details.	0.157 s	15 KBi
#5	Correcto Note: Main.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details.	0.162 s	15 KBi
#6	Correcto Note: Main.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details.	0.161 s	16 KBi
#7	Correcto Note: Main.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details.	0.159 s	16 KBi
#8	Correcto Note: Main.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details.	0.161 s	53 KBi
#9	Correcto Note: Main.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details.	0.159 s	16 KBi
#10	Correcto Note: Main.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details.	0.16 s	16 KBi
#11	Correcto Note: Main.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details.	0.152 s	16 KBi
#12	Correcto Note: Main.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details.	0.156 s	16 KBi

Puntos totales: 100 / 100

Código

import java.util.HashSet;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Data data = readWordFromStdin();

        HashSet hashSet = new HashSet<Character>();

        for (char letter : data.word.toCharArray()) {
            if (hashSet.contains(letter)) {
                System.out.println("yes");
                return;
            } else {
                hashSet.add(letter);
            }
        }

        System.out.println("no");
    }

    private static Data readWordFromStdin() {
        Data data = new Data();
        Scanner in = new Scanner(System.in);

        data.word = in.nextLine();

        return data;
    }

    private static class Data {
        String word;
    }
}