[BAEL-19886] - moved related articles to the new core-kotlin-modules/core-kotlin module

core-kotlin-modules/core-kotlin-lang-oop/src/main/kotlin/com/baeldung/kotlin/ListExtension.kt

@@ -1,14 +0,0 @@
-package com.baeldung.kotlin
-
-import java.util.concurrent.ThreadLocalRandom
-
-class ListExtension {
-    fun <T> List<T>.random(): T? {
-        if (this.isEmpty()) return null
-        return get(ThreadLocalRandom.current().nextInt(count()))
-    }
-
-    fun <T> getRandomElementOfList(list: List<T>): T? {
-        return list.random()
-    }
-}

core-kotlin-modules/core-kotlin-lang-oop/src/test/kotlin/com/baeldung/kotlin/ListExtensionTest.kt

@@ -1,19 +0,0 @@
-package com.baeldung.kotlin
-
-import com.baeldung.kotlin.ListExtension
-import org.junit.Test
-import kotlin.test.assertTrue
-
-class ListExtensionTest {
-    @Test
-    fun givenList_whenExecuteExtensionFunctionOnList_shouldReturnRandomElementOfList(){
-        //given
-        val elements = listOf("a", "b", "c")
-
-        //when
-        val result = ListExtension().getRandomElementOfList(elements)
-
-        //then
-        assertTrue(elements.contains(result))
-    }
-}