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ITI0202 Programmeerimise põhikursus (2025 kevad)

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Kaks klassi (Main ja Number). Mis prinditakse välja?

public class Main {

public static void main(String[] args) {

for (int i = 0; i < 10; i++) {

Number n = new Number(i++);

System.out.println(n.getValue());

}

}

}

public class Number {

private int value;

public Number(int value) {

this.value = value;

}

private int getValue() {

return value;

}

}

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On antud 3 klassi:

public class Fruit {

int price = 10;

public int getPrice() {

return price;

}

}

public class Apple extends Fruit {

@Override

public int getPrice() {

return super.getPrice() * 3 + super.getPrice();

}

}

public class Main {

public static void main(String[] args) {

Fruit fruit = new Fruit();

Apple firstApple = new Apple();

Apple secondApple = new Apple();

System.out.println(fruit.getPrice() + firstApple.getPrice() + secondApple.getPrice());

}

}

Mis on programmi väljund?

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Mida prindib antud kood?

public static void main(String[] args) {

int[] numbers = {8, 6, 4, 6, 9, 6};

printNumbers(numbers);

}

public void printNumbers(int[] numbers) {

for (int number: numbers) {

System.out.print(number);

}

}

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public static int getSum() {

int sum = 0;

for (int a = 50; a >= 0; a--) {

if (a % 10 == 0) {

sum += 1;

}

if (a % 5 == 0) {

sum -= 1;

}

}

return sum;

}

Mida tagastaks funktsioon välja kutsudes?

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Mitu argumenti võtab objekti klassi equals() meetod?

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// import ALL useful classes

import java.util.*;

class lamp {

int static count = 0;

public int id;

public static List<lamp> Lamps = new ArrayList<lamp>();

public lamp() {

if (Lamps.size() >= 10) {

throw new NullPointerException("It is impossible to have more than 10 lamps!");

}

// give every instance an unique id

this.id = count++;

Lamps.add(this);

}

public List<lamp> getLamps() {

// ensure user cannot change this list

return Collections.unmodifiableList(Lamps);

}

public static void main(String[] args) {

while (true) {

lamp m = new lamp();

System.out.println(m.id);

}}}

Mille vastu on koodi kirjutamisel eksitud (vali 5)?

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Mida tagastab antud funktsioon?

public String loopAlphabet() {

String alphabet = "abcdefghijklmnopqrstuvwxyz";

// 'a' ascii code is 97

String answ = "";

for (int i = 0; i < alphabet.length(); ++i) {

int letter = (int) alphabet.charAt(i);

if (letter % 2 != 0) answ += (char) letter;

}

return answ;

}

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Milline numbrijada on selle tsükli väljundiks?

for (int i = 0; i < 5; i++) {

System.out.print(++i + i-- + " ");

}

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Abstraktsed klassid erinevad teistest klassidest selle poolest, et...

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Vii koodijupp kokku selle tüüpilise tulemusega.

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