feat: kata/cyrillic-letters

docs/README.md

@@ -1,7 +1,7 @@
 # Codewars Handbook ☕️🚀
 
 [![Views statistics +1 👀](https://img.shields.io/badge/dynamic/xml?color=success&label=views&query=//*[name()=%27text%27][3]&url=https://hits.seeyoufarm.com/api/count/incr/badge.svg?url=https%3A%2F%2Fgithub.com%2FParanoidUser%2Fcodewars-handbook)](https://hits.seeyoufarm.com/api/count/graph/dailyhits.svg?url=https://github.com/ParanoidUser/codewars-handbook)
-[![Completed kata 👌](https://img.shields.io/badge/completed%20kata-69.2%25-red.svg)](https://www.codewars.com/kata/search/java?xids=completed)
+[![Completed kata 👌](https://img.shields.io/badge/completed%20kata-69.3%25-red.svg)](https://www.codewars.com/kata/search/java?xids=completed)
 [![CI pipeline 🛠](https://img.shields.io/github/actions/workflow/status/ParanoidUser/codewars-handbook/build.yml?branch=main)](https://github.com/ParanoidUser/codewars-handbook/actions/workflows/build.yml)
 [![Quality gate 🔎](https://img.shields.io/sonar/alert_status/codewars-handbook?server=https%3A%2F%2Fsonarcloud.io)](https://sonarcloud.io/dashboard?id=codewars-handbook)
 [![Let's have a chat! 📞](https://img.shields.io/gitter/room/ParanoidUser/codewars-handbook?color=49c39e)](https://gitter.im/ParanoidUser/codewars-handbook)
@@ -25,7 +25,7 @@ slug.
 
 | [1 kyu](/kata/1-kyu/index.md) | [2 kyu](/kata/2-kyu/index.md) | [3 kyu](/kata/3-kyu/index.md) | [4 kyu](/kata/4-kyu/index.md) | [5 kyu](/kata/5-kyu/index.md) | [6 kyu](/kata/6-kyu/index.md) | [7 kyu](/kata/7-kyu/index.md) | [8 kyu](/kata/8-kyu/index.md) | [beta](/kata/beta/index.md) | [retired](/kata/retired/index.md) |
 |:-----------------------------:|:-----------------------------:|:-----------------------------:|:-----------------------------:|:-----------------------------:|:-----------------------------:|:-----------------------------:|:-----------------------------:|:---------------------------:|:---------------------------------:|
-| 0 | 1 | 2 | 26 | 48 | 440 | 603 | 226 | 56 | 82 |
+| 0 | 1 | 2 | 26 | 48 | 440 | 604 | 226 | 56 | 82 |
 
 **Note:** The source code is written in Java 17 and may use language features that are incompatible
 with Java 8, 11.

kata/7-kyu/cyrillic-letters/README.md

@@ -0,0 +1,38 @@
+# [Cyrillic letters](https://www.codewars.com/kata/cyrillic-letters "https://www.codewars.com/kata/66d85e2db4d3909a8d0b53c9")
+
+Cyrillic letters, used in languages like Russian and Ukrainian, have different Unicode values than Latin letters. 2 of those cyrillic
+letters include `а` and `у` which, if you copy these 2, are not the same as the latin `a` and `y`
+
+Don't believe me?
+
+### Latin `a`:
+
+<img src="https://i.imgur.com/5OK3gh2.png" alt="The latin a" width="400"/>
+<img src="https://i.imgur.com/V5g0JoL.png" alt="End result of latin a" width="400"/>
+
+### Cyrillic `а`:
+
+<img src="https://i.imgur.com/xtbNwWV.png" alt="The cyrillic a" width="400"/>
+<img src="https://i.imgur.com/ZiGP37s.png" alt="End result of cyrillic a" width="400"/>
+
+## Task
+
+Your task is to write a function that returns whether a given string is a **Cyrillic letter in the Cyrillic Unicode Block**.
+
+The string will always be a single letter.
+
+## Hint
+
+Here is a link to [Wikipedia's list of the Cyrillic Unicode block](https://en.wikipedia.org/wiki/Cyrillic_(Unicode_block)) for reference
+
+## Examples
+
+```
+Input: "D"
+Output: false (or False in Python or your language's equivalent)
+```
+
+```
+Input: "Я"
+Output: true (or True in Python or your language's equivalent)
+```

kata/7-kyu/cyrillic-letters/main/Kata.java

@@ -0,0 +1,7 @@
+import static java.lang.Character.UnicodeBlock.*;
+
+interface Kata {
+  static boolean isCyrillic(char letter) {
+    return of(letter).equals(CYRILLIC);
+  }
+}

kata/7-kyu/cyrillic-letters/test/SampleTests.java

@@ -0,0 +1,19 @@
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.ValueSource;
+
+class SampleTests {
+  @ParameterizedTest
+  @ValueSource(chars = {'Д', 'а', 'ӿ', 'Ѐ'})
+  void cyrillic(char letter) {
+    assertTrue(Kata.isCyrillic(letter));
+  }
+
+  @ParameterizedTest
+  @ValueSource(chars = {'D', 'a', 'Ͽ', 'Ԁ'})
+  void negative(char letter) {
+    assertFalse(Kata.isCyrillic(letter));
+  }
+}

kata/7-kyu/index.md

@@ -126,6 +126,7 @@
 - [Curing Arachnophobia](curing-arachnophobia)
 - [Currying functions: multiply all elements in an array](currying-functions-multiply-all-elements-in-an-array)
 - [Cyclops numbers](cyclops-numbers)
+- [Cyrillic letters](cyrillic-letters)
 # D
 - [Day of the Year](day-of-the-year)
 - [Debug Sum of Digits of a Number](debug-sum-of-digits-of-a-number)