Exercise: Level 3

solutions/day-01/main.js

@@ -46,3 +46,41 @@ const backEnd = ["Node", "Express", "MongoDB"];
 const fullStack = [frontEnd, backEnd];
 
 console.log(fullStack);
+
+// Exercise - Level 3
+
+const ages = [19, 22, 19, 24, 20, 25, 26, 24, 25, 24];
+console.log(ages.sort());
+
+const sum = ages.reduce((total, x) => total + x);
+const len = ages.length;
+console.log(sum / len); // average
+
+const mid = Math.ceil(len / 2);
+
+const median = len % 2 == 0 ? (ages[mid] + ages[mid - 1]) / 2 : ages[mid - 1];
+
+console.log(median); // median
+
+const minIndex = ages[0];
+const maxIndex = ages[9];
+
+console.log(maxIndex - minIndex);
+
+console.log(Math.abs(minIndex - sum / len));
+console.log(Math.abs(maxIndex - sum / len));
+
+console.log(countries.slice(0, 10));
+
+countries.pop();
+
+if (countries.length % 2 != 0) {
+  console.log("odd");
+  countries.push("Sweden");
+  console.log(countries.slice(0, countries.length / 2));
+  console.log(countries.slice(countries.length / 2));
+} else {
+  console.log("even");
+  console.log(countries.slice(0, countries.length / 2));
+  console.log(countries.slice(countries.length / 2));
+}