feat: kata/pizza-party-number-1-how-many-pizzas-do-we-need

docs/README.md

@@ -1,7 +1,7 @@
 # Codewars Handbook ☕️🚀
 
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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 | 445 | 606 | 228 | 57 | 82 |
+| 0 | 1 | 2 | 26 | 48 | 445 | 606 | 228 | 58 | 82 |
 
 **Note:** The source code is written in Java 17 and may use language features that are incompatible
 with Java 8, 11.

kata/beta/index.md

@@ -42,6 +42,7 @@
 - [Parenthesis validator](parenthesis-validator)
 - [Perimeter of a Rectangle](perimeter-of-a-rectangle)
 - [Phase Transitions](phase-transitions)
+- [Pizza Party #1 - How many pizzas do we need](pizza-party-number-1-how-many-pizzas-do-we-need)
 - [Primary Primes](primary-primes)
 # R
 - [Random Wallpaper](random-wallpaper)

kata/beta/pizza-party-number-1-how-many-pizzas-do-we-need/README.md

@@ -0,0 +1,22 @@
+# [Pizza Party #1 - How many pizzas do we need](https://www.codewars.com/kata/pizza-party-number-1-how-many-pizzas-do-we-need "https://www.codewars.com/kata/67785cb55afb1ba50d5de514")
+
+## **Description**
+
+You're at a party, everything is great, and everyone wants pizza. But there's a twist—nobody agrees on how to count pizza slices! One person
+says he need `1/2` slices of pizza, another says `3/4`, and someone boldly declares `10/12`.
+
+Your mission: ensure everyone gets their requested slices by calculating how many **whole pizzas** to order. Remember, you can only order *
+*complete pizzas**—no partial ones!
+
+---
+
+## **Example**
+
+Person 1 wants `3/4` of a pizza.
+This means they want three out of the four slices that make up one whole pizza.
+
+Person 2 wants `5/4` of a pizza.
+This means they want more than one full pizza. In fact, they want one whole pizza `(4/4)` plus an additional slice, making a total of `5/4`.
+
+Now, let's add the slices together: 3/4 + 5/4 = 8/4. This means the total amount of pizza needed is equivalent to two full pizzas (since
+8/4 = 2).

kata/beta/pizza-party-number-1-how-many-pizzas-do-we-need/main/HowManyPizzas.java

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+import static java.util.stream.Stream.of;
+
+import java.util.function.ToDoubleFunction;
+
+interface HowManyPizzas {
+  static int numberOfPizzasToOrder(String[] slicesOfPizza) {
+    ToDoubleFunction<String> fr = s -> s.isEmpty() ? 0 : Double.parseDouble(s.split("/")[0]) / Integer.parseInt(s.split("/")[1]);
+    return slicesOfPizza == null ? 0 : (int) Math.ceil(of(slicesOfPizza).mapToDouble(fr).sum());
+  }
+}

kata/beta/pizza-party-number-1-how-many-pizzas-do-we-need/test/HowManyPizzasTest.java

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+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
+
+class HowManyPizzasTest {
+  @ParameterizedTest
+  @CsvSource(textBlock = """
+      1/1 1/1 1/1 1/1 1/1, 5
+      1/2 1/2 1/2 1/2, 2
+      10/12 8/6 20/8, 5
+      1/6 2/8 12/4, 4
+      3/5 4/5 6/5, 3
+      1/4 3/4 1/2, 2
+      0/1 0/2 0/3, 0
+      '', 0
+      , 0
+      """)
+  void sample(String order, int pizzas) {
+    String[] pizzaSlices = order != null ? order.split(" ") : null;
+    assertEquals(pizzas, HowManyPizzas.numberOfPizzasToOrder(pizzaSlices));
+  }
+}