31 lines
756 B
Kotlin
31 lines
756 B
Kotlin
// version 1.0.6
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const val SOLAR_DIAMETER = 864938
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enum class Planet { MERCURY, VENUS, EARTH, MARS, JUPITER, SATURN, URANUS, NEPTUNE, PLUTO } // Yeah, Pluto!
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class Star(val name: String) {
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fun showDiameter() {
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println("The diameter of the $name is ${"%,d".format(SOLAR_DIAMETER)} miles")
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}
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}
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class SolarSystem(val star: Star) {
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private val planets = mutableListOf<Planet>() // some people might prefer _planets
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init {
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for (planet in Planet.values()) planets.add(planet)
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}
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fun listPlanets() {
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println(planets)
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}
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}
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fun main(args: Array<String>) {
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val sun = Star("sun")
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val ss = SolarSystem(sun)
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sun.showDiameter()
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println("\nIts planetary system comprises : ")
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ss.listPlanets()
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}
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