Mine

import java.io.*;class Helicopter{	public static void main(String[] args) throws IOException		{		InputStreamReader inStream = new InputStreamReader(System.in);		BufferedReader stdin = new BufferedReader(inStream);		String input = "smth";		String[] tokens;		int lines;		int[][] coordinates;		while(!input.equals("0"))		{			System.out.println("Fut numrin e brinjeve (jo me vogel se 4 dhe jo me te madh se 20):");			input = stdin.readLine();			lines = Integer.parseInt(input);			System.out.println("Fut ciftet (gjatesia e brinjeve, drejtimi dhe ciftet te jene te ndare VETEM NGA NJE hapesire nga njeri-tjetri): ");			input = stdin.readLine();			tokens = input.split(" ");			for(int j = 0; j < tokens.length; j++) System.out.println(tokens[j]);			coordinates = pairsToCoordinates(tokens);			for(int i = 0; i < coordinates.length; i++)			{				for(int j = 0; j < coordinates[i].length; j++) System.out.println(coordinates[i][j] + " ");				System.out.print("\n");			}		}	}	public static int[][] pairsToCoordinates(String[] tokens)	{		int[][] coordinates = new int[(tokens.length / 2)][2];		int lineslength;		char direction;		for(int i = 1; i < coordinates.length; i++)		{			lineslength = 10;			direction = tokens[2*i+1].charAt(0);			switch(direction)			{				case 'M':					coordinates[i][0] = coordinates[i-1][0] - lineslength;					break;				case 'D':					coordinates[i][0] = coordinates[i-1][0] + lineslength;					break;				case 'P':					coordinates[i][1] = coordinates[i-1][1] - lineslength;					break;				case 'N':					coordinates[i][1] = coordinates[i-1][1] + lineslength;					break;			}		}		return coordinates;	}				}