pangram.kt

/**
# Please write a function that gets a text and tries to guess the possible languages of the text.
#
# Pangrams: Contains all the letters in an alpahabet of a language.
#
# English => The quick brown fox jumps over the lazy dog
# German  => Zwölf Boxkämpfer jagen Viktor quer über den großen Sylter Deich
# Turkish => Pijamalı hasta yağız şoföre çabucak güvendi
#
# Examples:
#
# Fix => [English, German]
# Foo bar => [English, German, Turkish]
# Oranienburger Straße => [German]
# Jägermeister => [German]
# çubuk => [Turkish]
# çwiß => []
 */

val eng = "English"
val ger = "German"
val tur = "Turkish"

fun pangram() {
  val english = "The quick brown fox jumps over the lazy dog"
    .filterNot { it.isWhitespace() }.toLowerCase()

  val german = "Zwölf Boxkämpfer jagen Viktor quer über den großen Sylter Deich"
    .filterNot { it.isWhitespace() }.toLowerCase()

  val turkish = "Pijamalı hasta yağız şoföre çabucak güvendi"
    .filterNot { it.isWhitespace() }.toLowerCase()

  val dictionary: Map<Char, MutableSet<String>> = buildMap {
    for (c in english) getOrPut(c) { mutableSetOf() }.add(eng)
    for (c in german) getOrPut(c) { mutableSetOf() }.add(ger)
    for (c in turkish) getOrPut(c) { mutableSetOf() }.add(tur)
  }

  val input = listOf("Fix", "Foo bar", "Oranienburger Straße", "Jägermeister", "çubuk", "çwiß")

  for (s in input) {
    var languages = setOf(eng, ger, tur)
    for (c in s.toLowerCase().filterNot { it.isWhitespace() }) {
      val applicableLanguages = dictionary[c].orEmpty()
      languages = languages.intersect(applicableLanguages)
    }
    println("$s -> $languages")
  }
}