MagicTrick.java

MagicTrick.java

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;

public class MagicTrick {
	
	private static final String BAD_MAGICIAN = "Bad magician!";
	private static final String VOLUNTEER_CHEATED = "Volunteer cheated!";
	
	public static void main(String[] args) {
		
		// Read file
		File file = new File(
				"/Work/EclipseWorkspace/GoogleCodeJam/src/testcases/A-small-attempt3.in");
		BufferedReader reader = null;
		String line = "";
		ArrayList<String> lines = new ArrayList<>();
		try {
			reader = new BufferedReader(new FileReader(file));
			while ((line = reader.readLine()) != null) {
				lines.add(line);
			}
			reader.close();
		} catch (IOException e) {
		}

		// Sets the Case number that will be placed in each iteration of the next loop
		int caseNum = 1;
		
		// Iterates over each set of two grids
		for (int i = 1; i < lines.size(); i += 10) {
			int firstRowNumber = Integer.parseInt(lines.get(i));
			int secondRowNumber = Integer.parseInt(lines.get(i+5));			
			
			String[] rowOne = lines.get(i + firstRowNumber).split(" ");
			String[] rowTwo = lines.get(i + 5 + secondRowNumber).split(" ");

			// Get matches
			int matches = 0;
			int[] temp = new int[4];
			for (int j = 0; j < 4; j++) {
				for (int k = 0; k < 4; k++) {
					if (Integer.parseInt(rowOne[j]) == Integer.parseInt(rowTwo[k])) {
						matches++;
						temp[0] = Integer.parseInt(rowOne[j]);
					}
				}
			}
			if (matches == 1) {
				System.out.println("Case #" + caseNum++ + ": " + temp[0]);
			} else if (matches > 1) {
				System.out.println("Case #" + caseNum++ + ": " + BAD_MAGICIAN );
			}else {
				System.out.println("Case #" + caseNum++ + ": " + VOLUNTEER_CHEATED);
			}
		}
	}
}