Birds.java

package birds;

import java.util.Arrays;

public class Birds {
	
	static int size=1;
	static int counterEmtyLine=size;
	
	static String birds[][]=new String[size][];
	
	final static int NAME=0;
	final static int NUMBER_BIRDS=1;
	final static int COST_PRICE=2;
	final static int FINAL_PRICE=3;
	final static int NUMBER_SALE=4;
	final static int SIZE=5;
	

	public static void main(String[] args) {
	 init();
	 printAllStatistics();
         printSaleStatistic("kalibri");
         printPriceStatistic("ostrich");
         printSaleAllBirds();
         printNumberBirdStatistic("kalibri");
         lessThree();
         profitStatistic();
         buyBirds("eagle",50);
         saleBirds("penguin",30);
         buyBirds("ostrich",50);
         buyBirds("kakadu",40);
         changeFinalPrice("kakadu",25);
         changeCostPrice("kakadu",10);
         printAllStatistics();
         profitStatistic();
	}
	////////////////////////////////////////////////////////////////////
	static void bigestBirds()
	{
	  size*=2;
	  String [][]bigestBirds=new String [size][];
	  
	  for(int i=0;i<birds.length;i++)
	  { 
		  bigestBirds[i]=new String [SIZE];
		
		  for(int j=0;j<bigestBirds[i].length;j++)
		  {
			  bigestBirds[i][j]=birds[i][j];
		  }  
	  }
	  counterEmtyLine=size/2;
	  birds=bigestBirds;
	}
    /////////////////////////////////////////////////////////////////////
	static void init()
	{
		   init("ostrich","2","5","10","10");
		   init("penguin","50","10","20","3");
		   init("kalibri","51","7","14","2");
		   init("eagle","0","5","10","50");
	}
    /////////////////////////////////////////////////////////////////////
	static void init(String nameBird,String numberBird,String costPrice,String finalPrice,String namberSale)
	{	
		 birds[findEmty()]=new String[]{nameBird,numberBird,costPrice,finalPrice,namberSale};
         counterEmtyLine--;
         
         if(counterEmtyLine==0)
         {
    	   bigestBirds();
    	  
         }
	}
    /////////////////////////////////////////////////////////////////////
	static int findEmty()
	{
		for(int i=0;i<size;i++)
			if(birds[i]==null)
				return i;
		
		return -1;
	}
    /////////////////////////////////////////////////////////////////////
	static void printAllStatistics()
	{
		System.out.println("_________________________________________________________________________________________");
		System.out.println("Kind of bird   || number of bird || cost price     || final price    || number of sale ||");
		System.out.println("_________________________________________________________________________________________");
		
		for(int i=0;i<birds.length-counterEmtyLine;i++)
		{
			
			   for(int j=0;j<birds[i].length;j++)
			   {   
			       if(birds[i][j]!=null)
			       {
			    	   System.out.print(birds[i][j]);
			    	   
			    	   for(int k=0;k<14-birds[i][j].length();k++)
			    	   {
			    	       System.out.print(" ");
			    	   }
			    	   
			           System.out.print(" || ");
			       } 
			   }
			   System.out.println();
			   System.out.println("_________________________________________________________________________________________");
			
		}
	}
	/////////////////////////////////////////////////////////////////////
	static void printSaleStatistic(String nameBird)
	{
		if(finderBird(nameBird)==-1)
			System.out.println("This kind of birds is not found");
		else
			System.out.println("Number of sold "+nameBird+" : "+birds[finderBird(nameBird)][4]);
	}
    /////////////////////////////////////////////////////////////////////
	static void printPriceStatistic(String nameBird)
	{
		if(finderBird(nameBird)==-1)
			System.out.println("This kind of birds is not found");
		else
			System.out.println("Price of "+nameBird+" : "+birds[finderBird(nameBird)][3]);
	}
     /////////////////////////////////////////////////////////////////////
	static void printSaleAllBirds()
	{
		for(int i=0;i<size;i++)
			if(birds[i]!=null)
			    System.out.println("Number of sold "+birds[i][0]+" : "+birds[i][4]);
	}
    /////////////////////////////////////////////////////////////////////
	static int finderBird(String nameBird)
	{
		for(int i=0;i<size;i++)
			if(birds[i]!=null && birds[i][NAME]==nameBird)
				return i;
		  
		return -1;	
	}
    /////////////////////////////////////////////////////////////////////
	static void printNumberBirdStatistic(String nameBird)
	{
		if(finderBird(nameBird)==-1)
			System.out.println("This kind of birds is not found");
		else
			System.out.println("Number of "+nameBird+" : "+birds[finderBird(nameBird)][1]);
	}
    /////////////////////////////////////////////////////////////////////
	static void lessThree()
	{
		System.out.println("It has less than three pieces :");
		
		for(int i=0;i<birds.length;i++)
			if(birds[i]!=null && Integer.valueOf(birds[i][NUMBER_BIRDS])<3)  
			       System.out.println(birds[i][NAME]);	
	}
    /////////////////////////////////////////////////////////////////////
	static void buyBirds(String nameBird,int numberBirds)
	{
		if(finderBird(nameBird)==-1)
		{
			init(nameBird,"0","10","20","0");
		}
	
		birds[finderBird(nameBird)][NUMBER_BIRDS]=String.valueOf(numberBird(nameBird)+numberBirds);	
	}
    /////////////////////////////////////////////////////////////////////
	static void saleBirds(String nameBird,int numberBirds)
	{
		if(finderBird(nameBird)==-1 || numberBird(nameBird)<numberBirds)
		{
			System.out.println("Sale is impossible");
			return;
		}
		
		birds[finderBird(nameBird)][NUMBER_BIRDS]=String.valueOf(numberBird(nameBird)-numberBirds);
		birds[finderBird(nameBird)][NUMBER_SALE]=String.valueOf(saleBird(nameBird)+numberBirds);
		
		System.out.println("The sale took place");
	}
	
    /////////////////////////////////////////////////////////////////////
	static int numberBird(String nameBird)
	{
		if(finderBird(nameBird)==-1)
			   return-1;
		return Integer.valueOf(birds[finderBird(nameBird)][NUMBER_BIRDS]);
	}
    /////////////////////////////////////////////////////////////////////
	static int saleBird(String nameBird)
	{
		if(finderBird(nameBird)==-1)
		   return-1;
		else
		   return Integer.valueOf(birds[finderBird(nameBird)][NUMBER_SALE]);
	}
    /////////////////////////////////////////////////////////////////////
	static void changeFinalPrice(String nameBird, int price)
	{
		if(finderBird(nameBird)==-1)
			System.out.println("This kind of birds is not found");
		else
			birds[finderBird(nameBird)][FINAL_PRICE]=String.valueOf(price);
	}
	/////////////////////////////////////////////////////////////////////
	static void changeCostPrice(String nameBird, int price)
	{
		if(finderBird(nameBird)==-1)
			System.out.println("This kind of birds is not found");
		else
			birds[finderBird(nameBird)][COST_PRICE]=String.valueOf(price);
	}
    /////////////////////////////////////////////////////////////////////
	static void profitStatistic()
	{
		int sum=0;
		
		for(int i=0;i<birds.length-counterEmtyLine;i++)
		{  
		   sum+=(Integer.valueOf(birds[i][FINAL_PRICE])*Integer.valueOf(birds[i][NUMBER_SALE])-
		   Integer.valueOf(birds[i][COST_PRICE])*(Integer.valueOf(birds[i][NUMBER_BIRDS]+Integer.valueOf(birds[i][NUMBER_SALE]))));
		}
		System.out.println("Profit is : "+sum);
	}
}