Change some data

solutions/day-01/level1.js

@@ -10,4 +10,22 @@ let middleItem = lengtharraOfNumbers / 2;
 console.log(middleItem);
 //Get the last item
 const [lastItem] = arraOfNumbers.slice(-1);
-console.log(lastItem);
+console.log(lastItem);
+
+const mixedDataTypes = [1, true, 'Helsinki', null, undefined,1234567890123452 ]
+const lengthMixedDataTypes = mixedDataTypes.length;
+//The length should be greater than 5
+console.log(lengthMixedDataTypes);
+
+const itCompanies = ["Facebook", "Google", "Microsoft", "Apple", "IBM", "Oracle", "Amazon"];
+console.log(itCompanies);
+
+//Print the first company
+const firstCompany = itCompanies[0];
+console.log(firstCompany);
+
+const middleCompany = itCompanies[(itCompanies.length - 1) / 2];
+console.log(middleCompany);
+
+const lastCompany = itCompanies.slice(-1);
+console.log(lastCompany);