Created home work

build.gradle.kts

@@ -1,5 +1,5 @@
 plugins {
-    kotlin("jvm") version "1.8.0"
+    kotlin("jvm") version "1.9.10"
     application
     id("io.gitlab.arturbosch.detekt") version "1.23.3"
 }
@@ -19,10 +19,22 @@ tasks.test {
     useJUnitPlatform()
 }
 
-kotlin {
-    jvmToolchain(11)
+// Force a Kotlin JVM target that the Kotlin plugin version understands.
+// Kotlin 1.8.x does not recognize JVM target "21", so set a supported target explicitly.
+tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile>().configureEach {
+    // Use JVM target 17 which is supported by this Kotlin plugin.
+    kotlinOptions.jvmTarget = "17"
 }
 
+// Configure Java compilation to target Java 17 as well so Kotlin and Java targets match.
+tasks.withType<JavaCompile>().configureEach {
+    sourceCompatibility = "17"
+    targetCompatibility = "17"
+    options.release.set(17)
+}
+
+// Use the JDK that Gradle is running with (no explicit toolchain requested).
+
 detekt {
     buildUponDefaultConfig = true // preconfigure defaults
     allRules = false // activate all available (even unstable) rules.

src/main/kotlin/mate/academy/RemoveChars.kt

@@ -1,6 +1,5 @@
 package mate.academy
 
 fun removeChars(str: String): String {
-    // Implement this function
-    return ""
+    return str.drop(1).dropLast(1)
 }