feat: kata/sort-by-last-char

Author: ParanoidUser

kata/7-kyu/sort-by-last-char/README.md

@@ -4,4 +4,4 @@ Given a string of words (x), you need to return an array of the words, sorted al
 
 If two words have the same last letter, the returned array should show them in the order they appeared in the given string.
 
-All inputs will be valid.
+All inputs will be valid.

kata/7-kyu/sort-by-last-char/main/Kata.java

@@ -0,0 +1,8 @@
+import static java.util.Comparator.comparingInt;
+import static java.util.stream.Stream.of;
+
+interface Kata {
+  static String[] last(String x) {
+    return of(x.split(" ")).sorted(comparingInt(s -> s.charAt(s.length() - 1))).toArray(String[]::new);
+  }
+}

kata/7-kyu/sort-by-last-char/test/LastWordSortTest.java

@@ -0,0 +1,25 @@
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.params.provider.Arguments.arguments;
+
+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 LastWordSortTest {
+  private static Stream<Arguments> testData() {
+    return Stream.of(
+        arguments("man i need a taxi up to ubud", new String[]{"a", "need", "ubud", "i", "taxi", "man", "to", "up"}),
+        arguments("what time are we climbing up the volcano", new String[]{"time", "are", "we", "the", "climbing", "volcano", "up", "what"}),
+        arguments("take me to semynak", new String[]{"take", "me", "semynak", "to"}),
+        arguments("massage yes massage yes massage", new String[]{"massage", "massage", "massage", "yes", "yes"}),
+        arguments("take bintang and a dance please", new String[]{"a", "and", "take", "dance", "please", "bintang"})
+    );
+  }
+
+  @ParameterizedTest
+  @MethodSource("testData")
+  void sample(String s, String[] expected) {
+    assertArrayEquals(expected, Kata.last(s));
+  }
+}