import javax.swing.*;
public class LEDEncryption
{
	public void run()
	{
		String colors = JOptionPane.showInputDialog("Enter the colors in reading order:");
		for(int aa = 0; aa < colors.length(); aa++)
		{
			int mult = multiplier(colors.charAt(aa));
			String letters = JOptionPane.showInputDialog("Enter the letters in reading order:");
			int[] nums1 = new int[4];
			int[] nums2 = new int[4];
			for(int bb = 0; bb < 4; bb++)
			{
				nums1[bb] = letToNum(letters.charAt(bb));
				nums2[bb] = nums1[bb] * mult;
				nums2[bb] = nums2[bb] % 26;
			}


			String press;
			if(nums2[0] == nums1[3])
				press = letters.charAt(0) + "";
			else if(nums2[1] == nums1[2])
				press = letters.charAt(1) + "";
			else if(nums2[2] == nums1[1])
				press = letters.charAt(2) + "";
			else
				press = letters.charAt(3) + "";

			JOptionPane.showMessageDialog(null, "Press this letter: " + press);
		}
	}
	private int multiplier(char c)
	{
		int m = 0;
		switch(c)
		{
			case 'r':
				m = 2;
				break;
			case 'g':
				m = 3;
				break;
			case 'b':
				m = 4;
				break;
			case 'y':
				m = 5;
				break;
			case 'p':
				m = 6;
				break;
			case 'o':
				m = 7;
				break;
		}
		return m;
	}
	private int letToNum(char l)
	{
		int n = 0;
		switch(l)
		{
			case 'a':
				n = 0;
				break;
			case 'b':
				n = 1;
				break;
			case 'c':
				n = 2;
				break;
			case 'd':
				n = 3;
				break;
			case 'e':
				n = 4;
				break;
			case 'f':
				n = 5;
				break;
			case 'g':
				n = 6;
				break;
			case 'h':
				n = 7;
				break;
			case 'i':
				n = 8;
				break;
			case 'j':
				n = 9;
				break;
			case 'k':
				n = 10;
				break;
			case 'l':
				n = 11;
				break;
			case 'm':
				n = 12;
				break;
			case 'n':
				n = 13;
				break;
			case 'o':
				n = 14;
				break;
			case 'p':
				n = 15;
				break;
			case 'q':
				n = 16;
				break;
			case 'r':
				n = 17;
				break;
			case 's':
				n = 18;
				break;
			case 't':
				n = 19;
				break;
			case 'u':
				n = 20;
				break;
			case 'v':
				n = 21;
				break;
			case 'w':
				n = 22;
				break;
			case 'x':
				n = 23;
				break;
			case 'y':
				n = 24;
				break;
			case 'z':
				n = 25;
				break;
		}
		return n;
	}
}