NO.2

import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {
  //Array ini jangan diubah
     static String customerId [][]={
        {"PewDiePie","7409102980","379803"},
        {"Bayu Skak","7412345678","290345"},
        {"Atta Halilintar","5609876543","389045"},
        {"Ari Lasso","3823456789","000011"},
        {"Brackeys","990022011","1110001"},
        {"Sultan","9910212122","111220099"}
    };
     public static void main(String[] args) {
        Scanner masuk = new Scanner (System.in);
        String ID = masuk.nextLine();
        boolean benar = checkId(ID);
        if(benar==true){
            String pass = masuk.nextLine();
            login(ID,pass);
        }
        else {
            System.out.println("ID "+ ID +" tidak ditemukan");
        }

    }

    public static boolean checkId(String acc){
        boolean hasil = false;
        for (int i = 0; i < 6; i++) {
            if(customerId[i][1].equalsIgnoreCase(acc)){
                hasil = true;
            }
        }
        return hasil;
    }

    public static void login(String acc, String pin){
        int accountno = -1;
        for (int i = 0; i < 6; i++) {
            if(customerId[i][1].equalsIgnoreCase(acc)){
                if(pin.equalsIgnoreCase(customerId[i][2])){
                    accountno = i;
                }
            }
        }
        if(accountno == -1){
            System.out.println("Pin anda salah");
        }
        else{
            System.out.println("Selamat datang " +customerId[accountno][0]
                                +" dengan ID " + customerId[accountno][1]);
        }
    }
}