feat: kata/find-out-whether-the-shape-is-a-cube

docs/README.md

@@ -1,7 +1,7 @@
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@@ -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 | 439 | 601 | 225 | 56 | 82 |
+| 0 | 1 | 2 | 26 | 48 | 439 | 602 | 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/8-kyu/find-out-whether-the-shape-is-a-cube/README.md

@@ -0,0 +1,17 @@
+# [Find out whether the shape is a cube](https://www.codewars.com/kata/find-out-whether-the-shape-is-a-cube "https://www.codewars.com/kata/58d248c7012397a81800005c")
+
+To find the volume (centimeters cubed) of a cuboid you use the formula:
+
+```
+volume = Length * Width * Height
+```
+
+But someone forgot to use proper record keeping, so we only have the volume, and the length of a single side!
+
+It's up to you to find out whether the cuboid has equal sides (= is a cube).
+
+Return `true` if the cuboid could have equal sides, return `false` otherwise.
+
+Return `false` for invalid numbers too (e.g volume or side is less than or equal to 0).
+
+Note: side will be an integer

kata/8-kyu/find-out-whether-the-shape-is-a-cube/main/Cube.java

@@ -0,0 +1,5 @@
+interface Cube {
+  static boolean isCube(int volume, int side) {
+    return volume > 0 && volume == Math.pow(side, 3);
+  }
+}

kata/8-kyu/find-out-whether-the-shape-is-a-cube/test/SolutionTest.java

@@ -0,0 +1,33 @@
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
+
+class SolutionTest {
+  @ParameterizedTest
+  @CsvSource(textBlock = """
+      1, 1
+      8, 2
+      27, 3
+      125, 5
+      """)
+  void cubes(int volume, int side) {
+    assertTrue(Cube.isCube(volume, side));
+  }
+
+  @ParameterizedTest
+  @CsvSource(textBlock = """
+      12, 2
+      8, 3
+      -8, -2
+      0, 0
+      1, 5
+      125, -5
+      0, 12
+      12, -1
+      """)
+  void others(int volume, int side) {
+    assertFalse(Cube.isCube(volume, side));
+  }
+}

kata/8-kyu/index.md

@@ -80,6 +80,7 @@
 - [Find Multiples of a Number](find-multiples-of-a-number)
 - [Find Nearest square number](find-nearest-square-number)
 - [Find numbers which are divisible by given number](find-numbers-which-are-divisible-by-given-number)
+- [Find out whether the shape is a cube](find-out-whether-the-shape-is-a-cube)
 - [Find the first non-consecutive number](find-the-first-non-consecutive-number)
 - [Find the force of gravity between two objects](find-the-force-of-gravity-between-two-objects)
 - [Find the Integral](find-the-integral)