Add samples for partition

libraries/stdlib/samples/test/samples/collections/arrays.kt

@@ -146,6 +146,13 @@ class Arrays {
             val array = arrayOf(1 to 'a', 2 to 'b', 3 to 'c')
             assertPrints(array.unzip(), "([1, 2, 3], [a, b, c])")
         }
+
+        @Sample
+        fun partitionArrayOfPrimitives() {
+            val array = intArrayOf(1, 2, 3, 4, 5)
+            val partition = array.partition { it % 2 == 0 }
+            assertPrints(partition, "([2, 4], [1, 3, 5])")
+        }
     }
 
     class ContentOperations {

libraries/stdlib/samples/test/samples/collections/iterables.kt

@@ -71,5 +71,18 @@ class Iterables {
             val result = listA.zip(listB) { a, b -> "$a$b" }
             assertPrints(result, "[a1, b2, c3]")
         }
+
+        @Sample
+        fun partition() {
+            data class Person(val name: String, val age: Int) {
+                override fun toString(): String {
+                    return "$name - $age"
+                }
+            }
+
+            val list = listOf(Person("Tom", 18), Person("Andy", 32), Person("Sarah", 22))
+            val result = list.partition { it.age < 30 }
+            assertPrints(result, "([Tom - 18, Sarah - 22], [Andy - 32])")
+        }
     }
 }

libraries/stdlib/samples/test/samples/collections/sequences.kt

@@ -228,6 +228,13 @@ class Sequences {
             val result = sequenceA.zip(sequenceB) { a, b -> "$a/$b" }
             assertPrints(result.take(4).toList(), "[a/1, b/3, c/7, d/15]")
         }
+
+        @Sample
+        fun partition() {
+            val sequence = sequenceOf(1, 2, 3, 4, 5)
+            val result = sequence.partition { it % 2 == 0 }
+            assertPrints(result, "([2, 4], [1, 3, 5])")
+        }
     }
 
 }

libraries/stdlib/samples/test/samples/text/strings.kt

@@ -170,6 +170,13 @@ class Strings {
         assertPrints(result, "{b=98, o=111, n=110, e=101,  =32, j=106, u=117, r=114, é=233}")
     }
 
+    @Sample
+    fun partition() {
+        val string = "Hello"
+        val result = string.partition { it == 'l' }
+        assertPrints(result, "(ll, Heo)")
+    }
+
     @Sample
     fun stringToByteArray() {
         val charset = Charsets.UTF_8