— Здравей, войнико!
„Здравейте, капитан Катерици, сър!“
„Имам страхотни новини за вас. Ето някои упражнения за укрепване на вашите умения. Работете върху тях всеки ден и вашата компетентност ще нарасне експоненциално. Те са специално проектирани за IntelliJ IDEA.“
„Тези предишни упражнения бяха за новобранци. Добавих някои по-напреднали бонус упражнения за старите хора. Само за ветерани.“
4
Задача
Java Syntax, ниво, урок
The whole duck isn't enough
This program implements a Duck class, and even creates two specific ducks (two objects). Create a couple more categories of animals similar to the Duck class, namely Cat and Dog. Figure out what the toString method should return in these classes and create pairs of each creature (meaning objects) and display them on the screen.
8
Задача
Java Syntax, ниво, урок
Man and woman
Creating classes is easy and fun. Let's feel like the creators of a virtual universe and create Man and Woman classes. They must be declared inside the Solution class and be public static. They need to have "name", "age" and "address" fields. We also need to declare constructors with all possible parameters. Then we will be able to use them to create specific objects.
4
Задача
Java Syntax, ниво, урок
Tom and Jerry
Remember the cartoon "Tom and Jerry"? If you're too young for this, Google will help. And here's why it matters: This cartoon has lots of cats, mice, and dogs. Our task now is to create three classes: Dog, Cat, and Mouse. Each should have three fields. Then create objects of these classes, naming them after the cartoon characters.
2
Задача
Java Syntax, ниво, урок
Display today's date
Sometimes programmers sit at the computer for days and get lost in time. So if some guy on the street asks you what year it is, it might not be Marty McFly. Maybe he just wrote code for too long. To not get lost, let's display the current date in the following format: "06 15 2018".
8
Задача
Java Syntax, ниво, урок
Console-based piggy bank
Imagine that we have a piggy bank. You can put coins in it until, at some point, you break it. Let's write a console-based emulator for this piggy bank: We will enter numbers from the keyboard and add them until we "break" the process using the special word "sum". Then the program should calculate how much you have saved.
2
Задача
Java Syntax, ниво, урок
Boss, something weird is happening
Other people's code is unknown territory. What awaits you there? Perhaps enlightened wolves who chant mantras, or bloodthirsty deer ready to tear your throat open... We don't want to frighten you, but we must warn you that other people's code is full of surprises. Let's dig into the program. In theory, it should sum up two numbers. Let's see what's wrong with it.
4
Задача
Java Syntax, ниво, урок
Improving functionality
The wisdom of programmers is captured in the following sentence: "If it works, don't touch it!". But what if you need to improve a program's functionality? Alas, 99% of the time, you still have to crawl into someone else's code. Well, let's get to it: there's a program that displays the minimum of two entered numbers. Rewrite it so that it does the same for 5 numbers.
8
Задача
Java Syntax, ниво, урок
Task about algorithms
Every classical algorithm has been programmed for a long time. Still, tasks about algorithms are very valuable. At the very least, they make the programmer think. There's nothing complicated about the algorithm to find the maximum. So let's not dilly-dally: write a program that takes a positive integer n, takes n numbers, and then finds the maximum of them.