homework done

src/main/kotlin/ru/otus/homework/homework.kt

@@ -0,0 +1,30 @@
+package ru.otus.homework
+
+import kotlin.random.Random
+import kotlin.time.measureTime
+
+fun task1(n1: Int, n2: Int, vararg numbers: Int): Int {
+    return numbers.sum() + n1 +n2
+}
+
+fun task2(vararg words: String, separator: Char = ' '): String {
+    return words.joinToString(separator.toString())
+}
+
+fun task4(timedFun: () -> Unit) {
+    val time = measureTime { timedFun() }
+    println("|-------------------------------|")
+    println("  function duration was ${time.inWholeMilliseconds} ms")
+    println("|-------------------------------|")
+}
+
+fun task4Example() {
+    task4 {
+        val time = Random.nextLong(1L, 3_000L)
+        Thread.sleep(time)
+    }
+}
+
+fun main() {
+    task4Example()
+}

src/test/kotlin/ru/otus/homework/TaskTest.kt

@@ -0,0 +1,26 @@
+package ru.otus.homework
+
+import org.junit.jupiter.api.Assertions
+import org.junit.jupiter.api.Test
+
+class TaskTest {
+    @Test
+    fun task1() {
+        Assertions.assertEquals(
+            10,
+            task1(1,2,3,4)
+        )
+    }
+
+    @Test
+    fun task2() {
+        Assertions.assertEquals(
+            "str1 str2 str3",
+            task2("str1", "str2", "str3")
+        )
+        Assertions.assertEquals(
+            "str1,str2,str3",
+            task2("str1", "str2", "str3", separator = ',')
+        )
+    }
+}