Chapter 10: Optimizing Synchronous Functions samples

Chapter10/optimize-sync/slow.js

@@ -0,0 +1,13 @@
+function sumOfSquares(maxNumber) {
+  const array = Array.from(Array(maxNumber + 1).keys());
+
+  return array
+    .map((number) => {
+      return number ** 2;
+    })
+    .reduce((accumulator, item) => {
+      return accumulator + item;
+    });
+}
+
+module.exports = sumOfSquares;