GameOfBotles.java

import java.util.Scanner;

public class GameOfBotles {

	public static void main(String[] args) {
		
		Scanner input = new Scanner(System.in);
		System.out.println("How many botles are on the field? ");
		int n = input.nextInt();
		int stepsX = 0;
		int stepsY = 0;
		int sum = 0;
		int minDistance=0;
		if ((n>9)||(n<0)){
			System.out.println("The botles on the field have to be at least one and at most nine !");
		}
		else {

			System.out.println("Choose the cordinats for each botle - 'x' and 'y' ");
			int field [][] = new int [n] [2];
			for (int row=0; row <field.length; row++){
				for (int col=0; col <field[row].length;col++){
					System.out.printf("field[%d,%d] = ", row, col);
					field [row][col] = input.nextInt();

					}
				}
			java.util.Arrays.sort(field, java.util.Comparator.comparingInt(a -> a[0]));

			for (int row=0; row <field.length-1; row++){

					stepsX = field [row+1][0] - field [row][0];  
					stepsY = field [row+1][1] - field [row][1];
										
					if (stepsY < 0){
						stepsY = stepsY * (-1);
										
					}
					sum = stepsX + stepsY;
					minDistance += sum;
					stepsY = 0;
					stepsX = 0;
					
			}
			System.out.println("The smallest walking distance is: "+minDistance);
			}
		
	}
}