Challenge: stazrouti submission

submissions/stazrouti/solution.js

@@ -0,0 +1,70 @@
+//to run the code use node solution.js in the terminal in this directory
+// Importing the fs module for file operations
+const fs = require('fs');
+
+// Reading the input.txt file
+fs.readFile('../../input.txt', 'utf8', (err, data) => {
+    if (err) throw err;
+
+    // Splitting the data into lines
+    let lines = data.split('\n');
+
+    // Creating maps to store city data and product data
+    let cityData = new Map();
+    let productData = new Map();
+
+    // Variables to track the city with the smallest sum
+    let smallestCity = null;
+    let smallestSum = Infinity;
+
+    // Looping through each line of data
+    for (let i = 0; i < lines.length; i++) {
+        let [city, product, priceStr] = lines[i].split(',');
+        let price = parseFloat(priceStr);
+
+        // Checking if the price is valid and the product is not empty
+        if (!isNaN(price) && product !== '') {
+            // Updating the cityData map with the sum of prices for each city
+            cityData.set(city, (cityData.get(city) || 0) + price);
+
+            // Updating the productData map with the products and prices for each city
+            if (!productData.has(city)) {
+                productData.set(city, new Set());
+            }
+            productData.get(city).add({ product, price });
+        }
+    }
+
+    // Finding the city with the smallest sum
+    for (let [city, sum] of cityData) {
+        if (sum < smallestSum) {
+            smallestSum = sum;
+            smallestCity = city;
+        }
+    }
+
+    // Checking if a smallest city is found
+    if (smallestCity) {
+        // Sorting and filtering the products for the smallest city
+        let sortedProducts = Array.from(productData.get(smallestCity))
+            .sort((a, b) => a.price - b.price || a.product.localeCompare(b.product))
+            .reduce((acc, current) => {
+                if (!acc.some(x => x.product === current.product)) {
+                    acc.push(current);
+                }
+                return acc;
+            }, [])
+            .slice(0, 6);
+
+        // Formatting the products and prices
+        let products = sortedProducts.map(({ product, price }) => `${product} ${price.toFixed(2)}`);
+
+        // Creating the output array
+        let outputArray = [`${smallestCity} ${smallestSum.toFixed(2)}`, ...products];
+
+        // Writing the output array to the output.txt file
+        fs.writeFile('../../output.txt', outputArray.join('\n'), (err) => {
+            if (err) throw err;
+        });
+    }
+});