feat: kata/find-the-vowels

Author: ParanoidUser

kata/7-kyu/find-the-vowels/README.md

@@ -1,16 +1,17 @@
 # [Find the vowels](https://www.codewars.com/kata/find-the-vowels "https://www.codewars.com/kata/5680781b6b7c2be860000036")
 
-We want to know the index of the vowels in a given word, for example, there are two vowels in the word super (the second and fourth letters). 
+We want to know the index of the vowels in a given word, for example, there are two vowels in the word super (the second and fourth
+letters).
 
 So given a string "super", we should return a list of `[2, 4]`.
 
-	Some examples:
-	Mmmm => []
-	Super => [2,4]
-	Apple => [1,5]
-	YoMama -> [1,2,4,6]
+Some examples:
+Mmmm => []
+Super => [2,4]
+Apple => [1,5]
+YoMama -> [1,2,4,6]
 
 ### NOTES
 
 * Vowels in this context refers to: a e i o u y (including upper case)
-* This is indexed from `[1..n]` (not zero indexed!)
+* This is indexed from `[1..n]` (not zero indexed!)

kata/7-kyu/find-the-vowels/main/Kata.java

@@ -0,0 +1,7 @@
+import static java.util.stream.IntStream.range;
+
+interface Kata {
+  static int[] vowelIndices(String word) {
+    return range(0, word.length()).filter(i -> "aeiou".indexOf(word.charAt(i)) >= 0).map(i -> i + 1).toArray();
+  }
+}

kata/7-kyu/find-the-vowels/test/VowelIndicesTest.java

@@ -0,0 +1,25 @@
+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;
+
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.params.provider.Arguments.arguments;
+
+class VowelIndicesTest {
+  private static Stream<Arguments> testData() {
+    return Stream.of(
+        arguments("mmm", new int[]{}),
+        arguments("apple", new int[]{1, 5}),
+        arguments("super", new int[]{2, 4}),
+        arguments("orange", new int[]{1, 3, 6}),
+        arguments("supercalifragilisticexpialidocious", new int[]{2, 4, 7, 9, 12, 14, 16, 19, 21, 24, 25, 27, 29, 31, 32, 33})
+    );
+  }
+
+  @ParameterizedTest
+  @MethodSource("testData")
+  void sample(String wd, int[] expected) {
+    assertArrayEquals(expected, Kata.vowelIndices(wd));
+  }
+}