05-Finished Level 1

05_Day_Arrays/05_day_starter/scripts/main.js

@@ -1,3 +1,139 @@
-console.log(countries)
-alert('Open the browser console whenever you work on JavaScript')
-alert('Open the console and check if the countries has been loaded')
+const countries = [
+  "Albania",
+  "Bolivia",
+  "Canada",
+  "Denmark",
+  "Ethiopia",
+  "Finland",
+  "Germany",
+  "Hungary",
+  "Ireland",
+  "Japan",
+  "Kenya",
+];
+const webTechs = [
+  "HTML",
+  "CSS",
+  "JavaScript",
+  "React",
+  "Redux",
+  "Node",
+  "MongoDB",
+];
+
+//Declare an empty array;
+const emptyArray = [];
+
+//Declare an array with more than 5 number of elements
+const numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
+
+//Find the length of the array
+console.log("Length of numbers array:", numbers.length);
+
+//Get the first, middle and last elements of the array
+console.log("First Item:", numbers[0]);
+console.log("Middle Item:", numbers[Math.floor(numbers.length / 2)]);
+console.log("Last Item:", numbers[numbers.length - 1]);
+
+//Declare an array called mixedDataTypes, put different data types in the array and find the length of the array. The array size should be greater than 5
+const mixedDataTypes = [
+  1,
+  "string",
+  true,
+  null,
+  undefined,
+  { key: "value" },
+  [1, 2, 3],
+];
+
+//Declare an array variable name it itCompanies and assign initial values
+const itCompanies = [
+  "Facebook",
+  "Google",
+  "Microsoft",
+  "Apple",
+  "IBM",
+  "Oracle",
+    "Amazon",
+  "Netflix"
+];
+
+//Print the array using console.log()
+console.log("IT Companies:", itCompanies);
+
+//Print the number of companies in the array
+console.log("IT Companies count:", itCompanies.length);
+
+//Print the first, middle and last IT company
+console.log("First IT Company:", itCompanies[0]);
+console.log(
+  "Middle IT Company:",
+  itCompanies[Math.floor(itCompanies.length / 2)]
+);
+console.log("Last IT Company:", itCompanies[itCompanies.length - 1]);
+
+//Print out each company
+console.log("IT Companies List:");
+itCompanies.forEach((company) => console.log(company));
+
+//Change each company name to uppercase one by one and print them out
+console.log("Companies in Uppercase");
+itCompanies.forEach((company) => console.log(company.toUpperCase()));
+
+//Print out the Array as a sentence
+console.log(itCompanies.toString());
+
+//Check if a certain company exists in the itCompanies array. If it exists, return the company else return a company is not found
+let companySearch = "IBAM";
+itCompanies.includes(companySearch) == true
+  ? console.log(companySearch, "has been found")
+  : console.log(`The company ${companySearch} is not found`);
+
+//Filter out companies which have more than one "o" without the filter method
+console.log("Companies with double o")
+let doubleo = [];
+for (let company of itCompanies) {
+    company.match(/oo/gm) ? doubleo.push(company) : null
+}
+console.log(doubleo);
+
+//Sort the array using sort() method
+console.log(itCompanies.sort());
+
+//Reverse the array using the reverse() method
+// console.log(itCompanies.reverse());
+
+//Slice out the first 3 companies from the array
+// itCompanies.splice(0, 3);
+// console.log(itCompanies)
+
+//Slice out the last 3 companies from the array
+// itCompanies.splice(itCompanies.length - 3, 3);
+console.log(itCompanies)
+
+//Slice out the middle IT company or companies from the array
+// if (itCompanies.length % 2 > 0) {
+//     itCompanies.splice(Math.floor(itCompanies.length / 2), 1);
+// } else {
+//     itCompanies.splice(Math.floor(itCompanies.length / 2) - 1, 2);
+// }
+// console.log(itCompanies)
+
+//Remove the first IT company from the array
+// itCompanies.shift();
+// console.log(itCompanies)
+
+//Remove the middle IT company or companies from the array
+// if (itCompanies.length % 2 > 0) {
+//     itCompanies.splice(Math.floor(itCompanies.length / 2), 1);
+// } else {
+//     itCompanies.splice(Math.floor(itCompanies.length / 2) - 1, 2);
+// }
+// console.log(itCompanies)
+
+//Remove the last IT company from the array
+// itCompanies.pop();
+// console.log(itCompanies);
+
+//Remove all the IT companies
+console.log(itCompanies.splice());