From 80a0006edf283c94293e53e982b3768a49af1351 Mon Sep 17 00:00:00 2001
From: "Andrei.Ovcharenko" <a@krot.name>
Date: Tue, 18 Aug 2026 22:57:56 +0300
Subject: [PATCH] fix(kyu6): drop duplicates from WhichAreIn.inArray
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Ката требует отсортированный результат без повторов, но inArray возвращал
слово столько раз, сколько оно встречалось в первом массиве: для
["arp","live","strong","arp","live"] выдавалось 5 элементов вместо 3.
Дефект не ловился, потому что WhichAreInTest состоял из одного вызова
SmokeMethodTestHarness без ассертов.

Остальные четыре дефекта из ветки claude/repository-audit-bugs-mku1k2
(NumberOfTrailingZerosOfN, SortTheOdd, TheSupermarketQueue,
CountingDuplicates) уже исправлены в main другими PR.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
---
 src/main/java/kyu6/WhichAreIn.java     |  1 +
 src/test/java/kyu6/WhichAreInTest.java | 49 +++++++++++++++++---------
 2 files changed, 33 insertions(+), 17 deletions(-)

diff --git a/src/main/java/kyu6/WhichAreIn.java b/src/main/java/kyu6/WhichAreIn.java
index faa14a2..897ab4b 100644
--- a/src/main/java/kyu6/WhichAreIn.java
+++ b/src/main/java/kyu6/WhichAreIn.java
@@ -12,6 +12,7 @@ public static String[] inArray(String[] array1, String[] array2) {
         return Stream.of(array1)
                 .filter(word -> Stream.of(array2)
                         .anyMatch(bigWord -> bigWord.contains(word)))
+                .distinct()
                 .sorted().toList()
                 .toArray(String[]::new);
     }
diff --git a/src/test/java/kyu6/WhichAreInTest.java b/src/test/java/kyu6/WhichAreInTest.java
index 29968e3..5012b68 100644
--- a/src/test/java/kyu6/WhichAreInTest.java
+++ b/src/test/java/kyu6/WhichAreInTest.java
@@ -1,24 +1,39 @@
+package kyu6;
+
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+
 import org.junit.jupiter.api.Tag;
-import java.util.*;
-import java.util.stream.*;
-import org.junit.jupiter.api.Assertions;
-import org.junit.jupiter.api.Disabled;
-import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
-import org.junit.jupiter.params.ParameterizedTest;
-import org.junit.jupiter.params.provider.Arguments;
-import org.junit.jupiter.params.provider.CsvSource;
-import org.junit.jupiter.params.provider.MethodSource;
-import org.junit.jupiter.params.provider.ValueSource;
-import net.jqwik.api.Property;
-import net.jqwik.api.ForAll;
-import static org.junit.jupiter.api.Assertions.*;
-import static org.junit.jupiter.params.provider.Arguments.arguments;
-import static kyu6.WhichAreIn.*;
+
 @Tag("smoke")
-public class WhichAreInTest {
+class WhichAreInTest {
+
     @Test
     void smokeTestsShouldExecuteApi() {
-        quality.SmokeMethodTestHarness.verify(kyu6.WhichAreIn.class);
+        quality.SmokeMethodTestHarness.verify(WhichAreIn.class);
+    }
+
+    @Test
+    void shouldReturnSortedSubstringsFromTheKataExample() {
+        String[] a1 = {"live", "arp", "strong"};
+        String[] a2 = {"lively", "alive", "harp", "sharp", "armstrong"};
+
+        assertArrayEquals(new String[]{"arp", "live", "strong"}, WhichAreIn.inArray(a1, a2));
+    }
+
+    @Test
+    void shouldReturnEmptyArrayWhenNothingIsContained() {
+        String[] a1 = {"tarp", "mice", "bull"};
+        String[] a2 = {"lively", "alive", "harp", "sharp", "armstrong"};
+
+        assertArrayEquals(new String[0], WhichAreIn.inArray(a1, a2));
+    }
+
+    @Test
+    void shouldNotRepeatWordsThatOccurTwiceInTheFirstArray() {
+        String[] a1 = {"arp", "live", "strong", "arp", "live"};
+        String[] a2 = {"lively", "alive", "harp", "sharp", "armstrong"};
+
+        assertArrayEquals(new String[]{"arp", "live", "strong"}, WhichAreIn.inArray(a1, a2));
     }
 }