Kembara Ke Pulau Harta Karun

Solution.java

import java.io.*;
import java.util.*;

public class Solution {

    public static void main(String[] args) {
        /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
        
        Scanner scanner = new Scanner(System.in);
        
        String kodePetunjuk = scanner.nextLine();
        String[] bagian = kodePetunjuk.split("(?<=\\D)(?=\\d)|(?<=\\d)(?=\\D)");
        
        String result = "Kapten Jarjit Singh harus berjalan ke arah ";
        
        String arah = "";
        int jumlahLangkah = 0;
        
        for (int i = 0; i < bagian.length; i++) {
            if (i % 2 == 0) {
                arah = konversiArah(bagian[i]);
            } else {
                jumlahLangkah = Integer.parseInt(bagian[i]);
                result += arah + " sebanyak " + jumlahLangkah + " langkah";
                
                if (i == bagian.length - 1) {
                    result += ".";
                } else if (i == bagian.length - 3) {
                    result += ", dan ";
                } else {
                    result += ", ";
                }
            }
        }
        
        System.out.println(result);
    }
    
    public static String konversiArah(String arah) {
        switch (arah) {
            case "U":
                return "Utara";
            case "T":
                return "Timur";
            case "S":
                return "Selatan";
            case "B":
                return "Barat";
            default:
                return "Arah tidak valid";
        }
    }
}