Algoritmi Vjezbe - Drago 23.10.2015

Zadatak 1. Pravougli trougao


public class PravougliTrougao {
    public static void main(String args[])
    {
        double a, b, c;
        a = Double.parseDouble(args[0]);
        b = Double.parseDouble(args[1]);

        if (a>0 && b>0)
        {
            c = Math.sqrt(Math.pow(a, 2)+ Math.pow(b, 2));
            System.out.println(c);
        }
        else
        {
            System.out.println("Brojevi moraju biti pozitivni!");
        }
    }
}

Zadatak 2. Minimalni broj od 3 unesena

import java.util.Scanner;
public class MinOd3Broja {
    public static void main(String args[])
    {
        int a, b, c, min;
        Scanner scan = new Scanner(System.in);
        System.out.print("A = ");
        a = scan.nextInt();
        System.out.print("B = ");
        b = scan.nextInt();
        System.out.print("C = ");
        c = scan.nextInt();

        if (a>= 0 && b>= 0 && c>= 0)
        {
            min = a;
            if (b < min)
                min = b;
            if (c < min)
                min = c;
                System.out.println("Minimalni broj od ("+a+", "+b+", "+c+") = "+min);
        }
            else
        {
            System.out.println("Ne ispravne vrijednosti");
        }


    }

}

Zadatak 3. Najmanji broj u nizu brojeva

import java.util.Scanner;
public class NajmanjiBrojIzNiza {
    public static void main(String args[])
    {

        int niz[] = new int[10];
        //int niz[] = {1, 4, 5, 2, 6, 5, 6}; ---> Drugi nacin unosenja niza

        Scanner scan = new Scanner(System.in);

        for (int i = 0; i<=9; i++)
        {
            System.out.print(i+1+". broj = ");
            niz[i]= scan.nextInt();
        }

        int min = niz[0];

        for (int i = 0; i<=9; i++)
        {
            if (niz[i]<min)
                min = niz[i];

        }
        System.out.println("Najmanji broj je "+min);
    }

}


Zadatak 4. Sortiranje 3 broja

import java.util.Scanner;


public class Sortiranje {

    public static void main(String[] args)
    {
        int a, b, c, p;
        Scanner scan = new Scanner(System.in);
        System.out.print("A = ");
        a = scan.nextInt();
        System.out.print("B = ");
        b = scan.nextInt();
        System.out.print("C = ");
        c = scan.nextInt();

        if (a > b)
        {
            p = a;
            a = b;
            b = p;
        }
        if (a > c)
        {
            p = a;
            a = c;
            c = p;
        }
        if (b > c)
        {
            p = b;
            b = c;
            c = p;
        }
        System.out.println("A = "+a+", B = "+b+", C = "+c);
    }

}

Zadatak 5. Sortiranje brojeva iz liste

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Scanner;
public class SortiranjePrekoListom {
    public static void main(String[] args)
    {
        ArrayList<Integer> lista = new ArrayList(); --> U < > zagradama navodimo tip podatka koji ce biti napisan u listi
        Scanner scan = new Scanner(System.in);
        int temp = 0;

        do
        {
            System.out.print(lista.size()+1+". broj = ");
            temp = scan.nextInt();
            if (temp != 0)
                lista.add(temp);
            else{
                System.out.println("Popunjavanje liste je zavrseno");
            }
        }
        while(temp != 0);
        System.out.println("ISPIS ELEMENATA LISTE!");
        for (int i = 0; i < lista.size();i++)
            System.out.println(lista.get(i));

        Comparator com = Collections.reverseOrder(); //Za sortiranje u opadajucem nizu
        Collections.sort(lista, com);//(lista) za sortiranje u rastucem
        System.out.println("2. nacin: ISPIS ELEMENATA LISTE POSLE SORTIRANJA!");
        for (int t : lista)
        {
            System.out.println(t);
        }
    }

}


Zadatak 6. Tabeliranje izraza

import java.util.Scanner;


public class TabeliranjeIzraza {
    public static void main(String[] args)
    {
        double xmin, xmax, dx, x, y;
        Scanner scan = new Scanner(System.in);
        System.out.print("xmin = ");
        xmin = scan.nextDouble();
        System.out.print("xmax = ");
        xmax = scan.nextDouble();
        System.out.print("dx = ");
        dx = scan.nextDouble();

        System.out.println("==========================");
        System.out.println("X \tY");

        for (x = xmin; x <= xmax; x+=dx)
        {
            y = (x*x*-2*x-2)/(x*x+1);
            System.out.println(x+"\t"+y);
        }
    }

}