Treasure Finder [Mimi]

import java.util.Arrays;
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class _03_TreasureFinder {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String regType = "(?:&+)(.+)(?:&+)";
        String regCoordinates = "(?:<+)(.+[^>])(?:>+)";

        Pattern pType = Pattern.compile(regType);
        Pattern pCoord = Pattern.compile(regCoordinates);

        int[] key = Arrays.stream(scanner.nextLine()
                .split("\\s+"))
                .mapToInt(Integer::parseInt)
                .toArray();

        String line = "";
        while (!"find".equals(line = scanner.nextLine())) {
            StringBuilder sb = new StringBuilder();
            if (key.length < line.length()) {
                for (int i = 0, j = 0; i < line.length(); i++, j++) {
                    char curr = (char) ((int) line.charAt(i) - key[j]);
                    sb.append(curr);
                    if (j == key.length - 1) {
                        j = -1;
                    }
                }
                String output = sb.toString();
                Matcher mType = pType.matcher(output);
                Matcher mCoord = pCoord.matcher(output);

                if (mType.find() && mCoord.find()) {
                    System.out.printf("Found %s at %s%n", mType.group(1), mCoord.group(1));
                }
            } else {
                for (int i = 0, j = 0; i < line.length(); i++, j++) {
                    char curr = (char) ((int) line.charAt(i) - key[j]);
                    sb.append(curr);
                }
                String output = sb.toString();
                Matcher mType = pType.matcher(output);
                Matcher mCoord = pCoord.matcher(output);

                if (mType.find() && mCoord.find()) {
                    System.out.printf("Found %s at %s%n", mType.group(1), mCoord.group(1));
                }
            }
        }
    }
}