e567. 12503 - Robot Instructions -- UVA | From: [140.136.20.201] | 發表日期 : 2024-10-27 17:20

java參考答案
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Main {

    public static int same(List<String> list, int x, int y) {
        String command = list.get(y);

        if (command.equals("LEFT")) {
            x -= 1;
        } else if (command.equals("RIGHT")) {
            x += 1;
        } else if (command.contains("SAME AS")) {
            int index = Integer.parseInt(command.substring(8)) - 1;
            x = same(list, x, index);
        }

        return x;
    }

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int count = sc.nextInt();
        sc.nextLine();

        for (int i = 0; i < count; i++) {
            int code_count = sc.nextInt();
            sc.nextLine();

            List<String> list = new ArrayList<>();
            for (int n = 0; n < code_count; n++) {
                String command = sc.nextLine();
                list.add(command);
            }

            int x = 0;
            for (int p = 0; p < list.size(); p++) {
                String command = list.get(p);
                if (command.equals("LEFT")) {
                    x -= 1;
                } else if (command.equals("RIGHT")) {
                    x += 1;
                } else if (command.contains("SAME AS")) {
                    int index = Integer.parseInt(command.substring(8)) - 1;
                    x = same(list, x, index);
                }
            }
            System.out.println(x);
        }

        sc.close();
    }
}