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Final tasks

New Java Syntax
Level 10, Lesson 9
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"Hello, soldier!"

"Hello, Captain Squirrels, sir!"

"I have great news for you. Here are some exercises to reinforce your skills. Work on them every day, and your competence will grow exponentially. They were specially designed for IntelliJ IDEA."

ALL IN ONE
10
Task
New Java Syntax, level 10, lesson 9
Locked
The whole duck isn't enough
The whole duck isn't enough
Open
10
Task
New Java Syntax, level 10, lesson 9
Locked
Man and woman
Man and woman
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10
Task
New Java Syntax, level 10, lesson 9
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Dog registration
Dog registration
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10
Task
New Java Syntax, level 10, lesson 9
Locked
Tom and Jerry
Tom and Jerry
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10
Task
New Java Syntax, level 10, lesson 9
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Display today's date
Display today's date
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"Those previous exercises were for rookies. I've added some more advanced bonus exercises for the old-timers. Just for veterans."

10
Task
New Java Syntax, level 10, lesson 9
Locked
Number of words in a string
Number of words in a string
Open
10
Task
New Java Syntax, level 10, lesson 9
Locked
Binary encoding
Binary encoding
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10
Task
New Java Syntax, level 10, lesson 9
Locked
IPv6
IPv6
Open
Comments (3)
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Dmitri Telinov Level 5
22 December 2025
Better to describe algorithm, Instead of: 

    public static String toBinary(int number) {
        String result = "";
        while (number != 0) {
            result = number % 2 + result;
            number /= 2;
        }
        return result;
    }
I got this solution: 

    public static String toBinary(int number) {
        return String.format("%8s", Integer.toBinaryString(number)).replace(' ', '0');
    }
Feel guilty because I tricked the system :D
Andrei Karavai Level 30
6 November 2023
The level with the most tasks so far😃 It's so nice that I don't have to go to work tomorrow
Andrei Karavai Level 30
6 November 2023
in the task "Binary encoding" the condition is described not correctly. To pass it you don't need to show leading zeros. So it must be not: (each character on a new line): C - 01000011 o - 01101111 d - 01100100 e - 01100101 G - 01000111 y - 01111001 m - 01101101 ! - 00100001 But like this: C - 1000011 o - 1101111 d - 1100100 e - 1100101 G - 1000111 y - 1111001 m - 1101101 ! - 100001