feat: kata/find-the-capitals-1 (#787)

* docs: kata description

* feat: kata/find-the-capitals-1

---------

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

Author: github-actions[bot]

kata/7-kyu/find-the-capitals-1/README.md

@@ -0,0 +1,10 @@
+# [Find the capitals](https://www.codewars.com/kata/find-the-capitals-1 "https://www.codewars.com/kata/539ee3b6757843632d00026b")
+
+Write a function that takes a single non-empty string of only lowercase and uppercase ascii letters (`word`) as its argument, and returns an
+ordered list containing the indices of all capital (uppercase) letters in the string.
+
+# Example (Input --> Output)
+
+```
+"CodEWaRs" --> [0,3,4,6]
+```

kata/7-kyu/find-the-capitals-1/main/Kata.java

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+import static java.util.stream.IntStream.range;
+
+interface Kata {
+  static int[] capitals(String s){
+    return range(0, s.length()).filter(i -> s.charAt(i) < 91).toArray();
+  }
+}

kata/7-kyu/find-the-capitals-1/test/CapitalsTest.java

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+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 CapitalsTest {
+  private static Stream<Arguments> testData() {
+    return Stream.of(
+        arguments("CodEWaRs", new int[]{0, 3, 4, 6}),
+        arguments("aAbB", new int[]{1, 3}),
+        arguments("AAA", new int[]{0, 1, 2}),
+        arguments("abcdefghijklmnopqrstuvwxyz", new int[0]),
+        arguments("ZYXWVUTSRQPONMLKJIHGFEDCBA", new int[]{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25}),
+        arguments("", new int[0]));
+  }
+
+  @ParameterizedTest
+  @MethodSource("testData")
+  void sample(String s, int[] expected) {
+    assertArrayEquals(expected, Kata.capitals(s));
+  }
+}

kata/7-kyu/index.md

@@ -179,6 +179,7 @@
 - [Find min and max](find-min-and-max "57a1ae8c7cb1f31e4e000130")
 - [Find Screen Size](find-screen-size "5bbd279c8f8bbd5ee500000f")
 - [Find sum of top-left to bottom-right diagonals](find-sum-of-top-left-to-bottom-right-diagonals "5497a3c181dd7291ce000700")
+- [Find the capitals](find-the-capitals-1 "539ee3b6757843632d00026b")
 - [Find the index of the second occurrence of a letter in a string](find-the-index-of-the-second-occurrence-of-a-letter-in-a-string "63f96036b15a210058300ca9")
 - [Find the Missing Number](find-the-missing-number "57f5e7bd60d0a0cfd900032d")
 - [Find the next perfect square!](find-the-next-perfect-square "56269eb78ad2e4ced1000013")