kirjuri's blog

Add Kotlin to the supported languages
By kirjuri, history, 8 years ago, In English

I have been experimenting with Kotlin lately, and it's a very simple and comfortable alternative to Java (at least in the scope of programming contests, I cannot find a case where some solution written in Kotlin would be uglier than the Java equivalent). Moreover, Codeforces supports Scala, which also runs on JVM, it's a much more expressive language with more advanced features, although they are useless for the competitive programming context: thus is makes more sense to add Kotlin (also|instead).

I would like to know what people think about it, and if I can contribute anyhow to make it possible, I would like to know as well. Thanks!

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8 years ago, # |
  Vote: I like it 0 Vote: I do not like it

Totally agree! This way, we can learn not only coding skills but also a programming language on Codeforces. If possible, please also consider Julia too.

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8 years ago, # |
  Vote: I like it +1 Vote: I do not like it

Well, creating several dimension array (3d for example) is (or at least was) uglier than in Java

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    8 years ago, # ^ |
      Vote: I like it -25 Vote: I do not like it

    Why Java is ugly?

    C++:

    int threedim[5][10][4];
memset(threedim, 0, sizeof(threedim));

    Java:

    int threedim1[][][] = new int[10][5][8]; // (1)
int[][][] threedim2 = new int[10][5][8]; // (2)

    C#:

    double[,] twodim = new double[10,9];
double[, ,] threedim = new double[10,9,5]; // (1)

double[][] twodim2 = new double[10][]; // (2)
for (int i = 0; i < twodim2.Length; i++)
	twodim2 [i] = new double[5];

    Python:

    w, h = 8, 5. 
twodim = [[0 for x in range(w)] for y in range(h)] # What the hell
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      8 years ago, # ^ |
        Vote: I like it +13 Vote: I do not like it

      Scala: 

      val threeDim = Array.fill(10, 5, 8)(0)

      Kotlin: ?

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        8 years ago, # ^ |
          Vote: I like it +8 Vote: I do not like it 
        val threeDim = Array(10){Array(5){IntArray(8)}}

        The Kotlin alternative is very flexible, it works for any kind of nested datastructures.

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      8 years ago, # ^ |
      ← Rev. 5   Vote: I like it -7 Vote: I do not like it

      tda = [[[0] * d1] * d2] * d3

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      8 years ago, # ^ |
      ← Rev. 3   Vote: I like it +13 Vote: I do not like it

      C'mon I said 'than in Java',

      What does these languages do with the topic?

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8 years ago, # |
  Vote: I like it 0 Vote: I do not like it

It would be a great idea. It was already supported in the surprise language contest before so it won't be a huge work :D

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