feat: kata/is-there-a-vowel-in-there (#844)

* docs: kata description

* feat: kata/is-there-a-vowel-in-there

---------

Co-authored-by: ParanoidUser <5120290+ParanoidUser@users.noreply.github.com>

Author: github-actions[bot]

kata/8-kyu/index.md

@@ -128,6 +128,7 @@
 - [Is it even?](is-it-even "555a67db74814aa4ee0001b5")
 - [Is n divisible by x and y?](is-n-divisible-by-x-and-y "5545f109004975ea66000086")
 - [Is the string uppercase?](is-the-string-uppercase "56cd44e1aa4ac7879200010b")
+- [Is there a vowel in there?](is-there-a-vowel-in-there "57cff961eca260b71900008f")
 - [Is your period late?](is-your-period-late "578a8a01e9fd1549e50001f1")
 - [Jenny's secret message](jennys-secret-message "55225023e1be1ec8bc000390")
 - [Kata Example Twist](kata-example-twist "525c1a07bb6dda6944000031")

kata/8-kyu/is-there-a-vowel-in-there/README.md

@@ -0,0 +1,8 @@
+# [Is there a vowel in there?](https://www.codewars.com/kata/is-there-a-vowel-in-there "https://www.codewars.com/kata/57cff961eca260b71900008f")
+
+Given an array of numbers, check if any of the numbers are the character codes for lower case vowels (`a, e, i, o, u`).
+
+If they are, change the array value to a string of that vowel.
+
+`input [100,100,116,105,117,121]=>[100,100,116,"i","u",121] output`
+Return the resulting array.

kata/8-kyu/is-there-a-vowel-in-there/main/VowelMapper.java

@@ -0,0 +1,7 @@
+import java.util.List;
+
+interface VowelMapper {
+  static List<Object> isVow(List<Integer> a) {
+    return a.stream().map(i -> (Object) ("aeiou".indexOf(i) < 0 ? i : ((char) i.intValue()) + "")).toList();
+  }
+}

kata/8-kyu/is-there-a-vowel-in-there/test/VowelMapperTest.java

@@ -0,0 +1,28 @@
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.List;
+import java.util.stream.Stream;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+
+class VowelMapperTest {
+  private static Stream<Arguments> testData() {
+    return Stream.of(
+        Arguments.of(
+            List.of(118, 117, 120, 121, 117, 98, 122, 97, 120, 106, 104, 116, 113, 114, 113, 120, 106),
+            List.of(118, "u", 120, 121, "u", 98, 122, "a", 120, 106, 104, 116, 113, 114, 113, 120, 106)
+        ),
+        Arguments.of(
+            List.of(101, 121, 110, 113, 113, 103, 121, 121, 101, 107, 103),
+            List.of("e", 121, 110, 113, 113, 103, 121, 121, "e", 107, 103)
+        )
+    );
+  }
+
+  @ParameterizedTest
+  @MethodSource("testData")
+  void sample(List<Integer> input, List<Object> expected) {
+    assertEquals(expected, VowelMapper.isVow(input));
+  }
+}