Implement in-place shuffle for arrays

Minor: reorder shuffle/shuffled extensions more consistently

#KT-25651 Fixed

libraries/stdlib/jvm/src/kotlin/collections/CollectionsJVM.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2018 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
  * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
@@ -28,6 +28,20 @@ public fun <T> listOf(element: T): List<T> = java.util.Collections.singletonList
 public inline fun <T> java.util.Enumeration<T>.toList(): List<T> = java.util.Collections.list(this)
 
 
+/**
+ * Returns a new list with the elements of this list randomly shuffled.
+ */
+@SinceKotlin("1.2")
+public actual fun <T> Iterable<T>.shuffled(): List<T> = toMutableList().apply { shuffle() }
+
+/**
+ * Returns a new list with the elements of this list randomly shuffled
+ * using the specified [random] instance as the source of randomness.
+ */
+@SinceKotlin("1.2")
+public fun <T> Iterable<T>.shuffled(random: java.util.Random): List<T> = toMutableList().apply { shuffle(random) }
+
+
 @kotlin.internal.InlineOnly
 internal actual inline fun copyToArrayImpl(collection: Collection<*>): Array<Any?> =
     kotlin.jvm.internal.collectionToArray(collection)

libraries/stdlib/jvm/src/kotlin/collections/MutableCollectionsJVM.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2018 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
  * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
@@ -71,16 +71,3 @@ public actual inline fun <T> MutableList<T>.shuffle() {
 public inline fun <T> MutableList<T>.shuffle(random: java.util.Random) {
     java.util.Collections.shuffle(this, random)
 }
-
-/**
- * Returns a new list with the elements of this list randomly shuffled.
- */
-@SinceKotlin("1.2")
-public actual fun <T> Iterable<T>.shuffled(): List<T> = toMutableList().apply { shuffle() }
-
-/**
- * Returns a new list with the elements of this list randomly shuffled
- * using the specified [random] instance as the source of randomness.
- */
-@SinceKotlin("1.2")
-public fun <T> Iterable<T>.shuffled(random: java.util.Random): List<T> = toMutableList().apply { shuffle(random) }