question: FruitStand

README.md

@@ -120,6 +120,7 @@ I started this in the [issue #176](https://buttondown.email/cassidoo/archive/we-
 - [352 - maxProduct](src/2024/352-maxProduct)
 - [355 - onlyEvens](src/2024/355-onlyEvens)
 - [357 - sortNames](src/2024/357-sortNames)
+- [359 - FruitStand](src/2024/359-FruitStand)
 </details>
 
 ## Installing & Running

src/2024/359-FruitStand/FruitStand.test.ts

@@ -0,0 +1,38 @@
+import { FruitStand } from './FruitStand';
+
+describe('#FruitStand', () => {
+	let stand: FruitStand;
+
+	beforeEach(() => {
+		stand = new FruitStand();
+	});
+
+	it('should add a fruit correctly', () => {
+		stand.addFruit('apple', 10, 0.5);
+		expect(stand.fruits).toStrictEqual({ apple: { quantity: 10, price: 0.5 } });
+	});
+
+	it('should throw an error when adding an existing fruit', () => {
+		stand.addFruit('apple', 10, 0.5);
+		expect(() => stand.addFruit('apple', 5, 0.2)).toThrow(
+			'Fruit already exists. Use updateQuantity to change the quantity.',
+		);
+	});
+
+	it('should update the quantity of an existing fruit correctly', () => {
+		stand.addFruit('banana', 5, 0.2);
+		stand.updateQuantity('banana', 10);
+		expect(stand.fruits.banana.quantity).toBe(10);
+	});
+
+	it('should throw an error when updating a non-existent fruit', () => {
+		expect(() => stand.updateQuantity('cherry', 20)).toThrow('Fruit not found.');
+	});
+
+	it('should calculate the total value correctly', () => {
+		stand.addFruit('apple', 10, 0.5);
+		stand.addFruit('banana', 5, 0.2);
+		stand.addFruit('cherry', 20, 0.1);
+		expect(stand.totalValue()).toBe(10 * 0.5 + 5 * 0.2 + 20 * 0.1);
+	});
+});

src/2024/359-FruitStand/FruitStand.ts

@@ -0,0 +1,54 @@
+/*
+Define a FruitStand class that allows you to add different types of fruits with their quantities and
+prices, update them, and calculate the total value of all the fruits in the stand.
+Implement the following methods:
+	- addFruit(name, quantity, price)
+	- updateQuantity(name, quantity)
+	- totalValue()!
+
+Example usage:
+
+// Create a new fruit stand
+let stand = FruitStand()
+
+// Add fruits to the stand
+stand.addFruit("apple", 10, 0.5)
+stand.addFruit("banana", 5, 0.2)
+stand.addFruit("cherry", 20, 0.1)
+
+// Update the quantity of an existing fruit
+stand.updateQuantity("banana", 10)
+
+// Calculate the total value of all fruits in the stand
+console.log(stand.totalValue())
+*/
+
+interface FruitData {
+	quantity: number;
+	price: number;
+}
+
+export class FruitStand {
+	constructor(public fruits: Record<string, FruitData> = {}) {}
+
+	addFruit(name: string, quantity: number, price: number) {
+		if (this.fruits[name]) {
+			throw new Error('Fruit already exists. Use updateQuantity to change the quantity.');
+		}
+		this.fruits[name] = { quantity, price };
+	}
+
+	updateQuantity(name: string, quantity: number) {
+		if (!this.fruits[name]) {
+			throw new Error('Fruit not found.');
+		}
+		this.fruits[name] = { ...this.fruits[name], quantity };
+	}
+
+	totalValue() {
+		return Object.values(this.fruits).reduce(
+			(total, { quantity, price }) => total + quantity * price,
+			0,
+		);
+	}
+}

src/2024/359-FruitStand/README.md

@@ -0,0 +1,29 @@
+# FruitStand
+
+Interview question of the [issue #359 of rendezvous with cassidoo](https://buttondown.email/cassidoo/archive/the-days-you-work-are-the-best-days-georgia/).
+
+## The Question
+
+**Define a `FruitStand` class that allows you to add different types of fruits with their quantities and prices, update them, and calculate the total value of all the fruits in the stand.** Implement the following methods: `addFruit(name, quantity, price)`, `updateQuantity(name, quantity)`, and `totalValue()`!
+
+Example usage:
+
+```js
+// Create a new fruit stand
+let stand = FruitStand()
+
+// Add fruits to the stand
+stand.addFruit("apple", 10, 0.5)
+stand.addFruit("banana", 5, 0.2)
+stand.addFruit("cherry", 20, 0.1)
+
+// Update the quantity of an existing fruit
+stand.updateQuantity("banana", 10)
+
+// Calculate the total value of all fruits in the stand
+console.log(stand.totalValue())
+```
+
+## Installing & Running
+
+Just `pnpm i` to install all dependencies and then `pnpm t` to run the tests!