"Này, Amigo!"
"Xin chào, Đội trưởng Sóc!"
"Bạn đã hoàn thành nó! Vẫn còn nhiều việc phải làm, nhưng bây giờ bạn có thể dành một chút thời gian để tận hưởng chiến thắng của mình: bạn đã hoàn thành nhiệm vụ! Tôi chắc rằng bạn sẽ hài lòng hơn nữa nếu bạn hoàn thành một vài nhiều tác vụ hơn, được tạo riêng cho IntelliJ IDEA."
"Ha ha, quả nhiên biết cách làm ta vui lên."
3
Nhiệm vụ
Java Core, mức độ, bài học
We all have a little cat in us…
Would you like to be called Fluffy? What if you were also a super attractive redheaded cat who had lost an eye during the turf wars? Imagine, you're this fearless cat, the king of the streets - and then suddenly - Fluffy! And all the dogs start laughing. Help the cat regain his pride by overriding the getName method.
3
Nhiệm vụ
Java Core, mức độ, bài học
Fluffy no more
It turns out a redheaded cat named Fluffy fought for months to unify the Seven Courtyards of Fifth Street. But Beast doesn't want to be Fluffy. We need to change the original data and override the setName method. Otherwise, Beast's inner lion will never be unleashed.
3
Nhiệm vụ
Java Core, mức độ, bài học
Fluffy yet again…
Guess what. In case you still don't realize it, our sneaky red-haired cat really doesn't like that his owners named him Fluffy. One method for combating life’s injustices is to just hide the truth. So, here's a Cat class. Write a method that will prevent the message "I'm Fluffy" from being displayed.
3
Nhiệm vụ
Java Core, mức độ, bài học
Unknown animal
200 years have passed since the nuclear blast. Animals and intelligent life forms emerged from the drain pipes and began to multiply and replenish. Let's help the intelligent life forms compile a list of the animals that survived.
7
Nhiệm vụ
Java Core, mức độ, bài học
Visitors
A group of tourists from Planet Tally visited a Terranian zoo. But all of the animals' nameplates had been stolen by robots who needed the metal for medication. We'll forgive the robots, but now we need to write a method that determines the type of objects passed to it (cat, lion, tiger, bull, cow, or generic animal).
3
Nhiệm vụ
Java Core, mức độ, bài học
Climb, fly, and run
What we're really doing right now is building a genuine foundation for making computer games, or more specifically, computer game characters who can run, swim, and fly... So press forward. Let’s create some movement interfaces and add them to the Tiger, Dog, Cat, and Duck classes.
3
Nhiệm vụ
Java Core, mức độ, bài học
CanFly, CanRun, and CanSwim for the Duck, Penguin, and Toad classes
If God meant for us to fly, he'd have given us wings. Yeah, right! You're a programmer, so you decide who is capable of doing something. Need a flying penguin or a toad that can run a marathon? Yes, please! Just write some intelligible code. And now for the task. Add movement interfaces to each animal class. The details are in the task conditions.
3
Nhiệm vụ
Java Core, mức độ, bài học
Interfaces for the Human class
A human is a very complex organism. And it's hard to program one. But we will try, at least to some degree. Here we have a Human class and interfaces. You need to add as many interfaces to the Human class as possible, but be sure that it doesn't become an abstract class. Don't add any methods.
3
Nhiệm vụ
Java Core, mức độ, bài học
Parent of the CTO class
Do you know how repair shops get started? Just like products in stores, they don't just spontaneously appear from the depths of the planet. Behind each of them are people, machines, and Mallorians. In this task, we need to add the correct parent to the CTO class, and Be sure that when we are done the class is no longer abstract.
3
Nhiệm vụ
Java Core, mức độ, bài học
Making the top ten
Previously, the Bull's Eye school used a five-point system, but they have now switched to a ten-point system. Here is a method that prints the number five, but you need it to display ten. How will you do it? Are you going to write a whole new method or overload the old one?
3
Nhiệm vụ
Java Core, mức độ, bài học
Useless abstractions
This task is, well, just like modern art on Planet Fifties': It's full of useless abstractions, and then strict realism is used where abstractions would have made sense. As you've probably already guessed, we've given you a brainteaser: You need to place the abstract keyword in the right places so that the program will compile.
3
Nhiệm vụ
Java Core, mức độ, bài học
Adding new functionality
The winged horse Pegasus, the beloved of the muses... Even programming should be little poetic. Check this out: take a horse and the Fly interface, put them together and... we get Pegasus! So it isn't very poetic... but it works! You're still there? You can already solve this one!
3
Nhiệm vụ
Java Core, mức độ, bài học
The isomorphs are coming
If we talk about ordered isomorphs from Planet Linear Chaos, it means that we're about to solve a problem about algorithms. After all, an isomorph without algorithms is no isomorph at all. They won't even talk to people or robots who can't find the minimum of an array and identify its position in the array. But can you do it?