Anonymní profil Screpheep – Programujte.com

#4 Dano
 

package du4;

public class Matice {

    private double[][] matice;

    public void naplnSekvenci(double od) {
        for (int i = 0; i < matice.length; i++) {
            for (int j = 0; j < matice[i].length; j++) {
                matice[i][j] = od++;
            }
        }

    }
    public double[][] getMatice(Matice m){
        return m.matice;
    }

    private boolean kontrola(int i, int j) {
        if (i < 0) {
            return true;
        }
        if (j < 0) {
            return true;
        }
        if (i >= matice.length) {
            return true;
        }
        if (j >= matice.length) {
            return true;
        }
        return false;
    }

    public void naplnSachovnici() {
        int a = 0;
        for (int i = 0; i < matice.length; i++) {
            for (int j = 0; j < matice[i].length; j++) {
                if ((a % 2) == 0) {
                    matice[i][j] = 0;
                } else {
                    matice[i][j] = 1;
                }
                a++;
                if (matice[0].length % 2 == 0) {
                    if (matice[0].length - 1 == j) {
                        a++;
                    }
                }
            }
        }

    }

    public double prvek(int i, int j) {
        double a = 0;
        i--;
        j--;
        if (i < 0) {
            return 0 / a;
        }
        if (j < 0) {
            return 0 / a;
        }
        if (i > matice.length) {
            return 0 / a;
        }
        if (j > matice[0].length) {
            return 0 / a;
        }
        return matice[i][j];
    }

    public int pocetRadku() {
        return matice.length;
    }

    public int pocetSloupcu() {
        return matice[0].length;
    }

    public double soucet() {
        double s = 0;
        for (int i = 0; i < matice.length; i++) {
            for (int j = 0; j < matice[i].length; j++) {
                s = s + matice[i][j];
            }
        }
        return s;

    }

    @Override
    public String toString() {
        String s = "";
        for (int i = 0; i < matice.length; i++) {
            for (int j = 0; j < matice[i].length; j++) {
//       
                if (j == 0) {
                    s = s + String.format("%5.2f", matice[i][j]);
                } else {
                    if(matice[i][j] >= 100){
                        s = s + " ";
                    }
                    s = s + String.format("%6.2f", matice[i][j]);
                }
                if (j == (matice[0].length - 1)) {
                    if (i == matice.length - 1) {
                    } else {

                        s = s + "\n";
                    }
                }




            }
        }
        return s;
    }

    public void prohodRadky(int i, int j) {
        i--;
        j--;
        double a;
        if (kontrola(i, j) == true) {
        } else {
            for (int k = 0; k < matice[i].length; k++) {
                a = matice[i][k];
                matice[i][k] = matice[j][k];
                matice[j][k] = a;

            }
        }
    }

   
    public Matice(int radky, int sloupce) {
        radky = Math.abs(radky);
        sloupce = Math.abs(sloupce);
        if (radky == 0) {
            radky = 1;
        }
        if (sloupce == 0) {
            sloupce = 1;
        }
        matice = new double[radky][sloupce];
        for (int i = 0; i < radky; i++) {
            for (int j = 0; j < sloupce; j++) {
                matice[i][j] = 0;
            }
        }
    }
}

package du4;

import java.util.Scanner;

public class DU4 {

    public static void main(String[] args) {    Scanner scan = new Scanner(System.in);   
    
    int r, s, od; 
    System.out.println("---Vysledky---"); 
    System.out.print("Zadej pocet radku:"); 
    r = scan.nextInt(); 
    if (r <= 0) { 
        System.out.println("Pocet radku musi byt vetsi nez 0."); 
        System.exit(1); 
    } 
    System.out.print("Zadej pocet sloupcu:"); 
    s = scan.nextInt(); 
    if (s <= 0) { 
        System.out.println("Pocet sloupcu musi byt vetsi nez 0."); 
        System.exit(1); 
    } 
    System.out.print("Zadej pocatechni hodnotu:"); 
    od = scan.nextInt(); 
    Matice m = new Matice(r,s); 
    System.out.println(m); 
    m.naplnSekvenci(od); 
    System.out.println("---"); 
    System.out.println(m); 
    m.prohodRadky(1, 2); 
    System.out.println("---"); 
    System.out.println(m); 
    m.naplnSachovnici(); 
    System.out.println("---"); 
    System.out.println(m); 
    System.out.println("---"); 
    System.out.printf("soucet = %.2f%n", m.soucet()); 
    m.prohodRadky(1, 2); 
    System.out.println("---"); 
    System.out.println(m); 
    }
}