setup gradle

playground/build.gradle.kts

@@ -0,0 +1,10 @@
+plugins {
+  application
+}
+
+dependencies {
+  implementation(platform("org.jetbrains.kotlin:kotlin-bom"))
+  implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8")
+  testImplementation("org.jetbrains.kotlin:kotlin-test")
+  testImplementation("org.jetbrains.kotlin:kotlin-test-junit")
+}