Update Day 05 on the master branch

05_Day_Arrays/05_day_starter/data/webtech.mjs

@@ -0,0 +1,9 @@
+export const webTechs = [
+  "HTML",
+  "CSS",
+  "JavaScript",
+  "React",
+  "Redux",
+  "Node",
+  "MongoDB",
+];

05_Day_Arrays/05_day_starter/scripts/main.js

@@ -1,4 +0,0 @@
-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')
-console.log(countries)

05_Day_Arrays/05_day_starter/scripts/main.mjs

@@ -0,0 +1,252 @@
+// import { webTechs } from "../data/webtechs";
+import { countries } from "../data/countries.mjs";
+import { webTechs } from "../data/webtechs.mjs";
+
+//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());
+
+//LEVEL 2
+
+//Create separate files for countries and web_techs and access from this file.
+// console.log(countries)
+// console.log(webTechs);
+
+//Remove punctuations and change the string to array and count the number of words in it.
+
+let text =
+  "I love teaching and empowering people. I teach HTML, CSS, JS, React, Python.";
+
+let words = text.replace(/\,|\./gm, "").split(" ");
+// console.log("Text Array:", words)
+// console.log(`Text Length: ${words.length}`);
+
+//In the following shopping cart add, remove, edit items
+const shoppingCart = ["Milk", "Coffee", "Tea", "Honey"];
+
+//Add 'Meat' in the beginning of your shoppinh cart if it has not been already added
+let foodToAdd = "Meat";
+let checkFood = shoppingCart.includes(foodToAdd);
+!checkFood ? shoppingCart.unshift(foodToAdd) : "";
+// console.log(shoppingCart);
+
+//Add Sugar at the end of your shopping cart if it has not already been added
+let foodToAdd2 = "Sugar";
+let checkFood2 = shoppingCart.includes(foodToAdd2);
+!checkFood2 ? shoppingCart.push(foodToAdd2) : "";
+// console.log(shoppingCart);
+
+//Remove Honey if you are allergic to honey
+let foodToRemove = "Honey";
+let allergy = shoppingCart.includes(foodToRemove);
+allergy ? shoppingCart.splice(shoppingCart.indexOf(foodToRemove), 1) : null;
+// console.log(shoppingCart);
+
+//Modify Tea to 'Green Tea'
+let searchItem = "Tea";
+let checkItem = shoppingCart.includes(searchItem);
+checkItem
+  ? (shoppingCart[shoppingCart.indexOf(searchItem)] = "Green Tea")
+  : null;
+// console.log(shoppingCart);
+
+//Check if Ethiopia exists in the countries array. If it exists, print 'ETHIOPIA'. If not, add it to the countries list
+let checkCountries = countries.includes("Ethiopia");
+checkCountries ? console.log("ETHIOPIA") : countries.push("Ethiopia");
+
+//Check if Sass exists in webTechs, if it exists, print 'Sass is a CSS Preprocessor'. If not, add Sass to webTechs
+
+let checkWebTechs = webTechs.includes("Sass");
+checkWebTechs
+  ? console.log("Sass is a CSS Preprocessor")
+  : webTechs.push("Sass");
+// console.log(webTechs);
+
+//Concatenate the following two variables and store it in a fullStack variable
+const frontEnd = ["HTML", "CSS", "JS", "React", "Redux"];
+const backend = ["Node", "Express", "MongoDB"];
+
+let fullStack = frontEnd.concat(backend);
+// console.log(fullStack);
+
+//LEVEL 3
+
+//sort array of student ages
+const ages = [19, 22, 19, 24, 20, 25, 26, 24, 25, 24];
+
+ages.sort((a, b) => a - b);
+
+console.log(ages);
+
+//Find the median age (one middle item or two middle items divided by two)
+let median =
+  ages.length % 2 > 0
+    ? ages[Math.floor(ages.length / 2)]
+    : Math.round((ages[ages.length / 2 - 1] + ages[ages.length / 2]) / 2);
+// console.log(median)
+
+//Find the average age (all items divided by number of items)
+let sumAges = 0;
+ages.forEach((age) => (sumAges += age));
+let average = sumAges / ages.length;
+// console.log(average);
+
+//Find the range of the ages (max minus min)
+let minAge = Math.min(...ages);
+let maxAge = Math.max(...ages);
+//using arrays after sorting
+//let minAge = ages[0]
+//let maxAge = ages.reverse()[0];
+let range = maxAge - minAge;
+// console.log(range)
+
+//Compare the value of (min - average) and (max - average), use abs() method
+let minval = minAge - average;
+let maxval = maxAge - average;
+console.log(Math.abs(maxval - minval));
+
+//Slice the first ten countries from countries array
+// console.log(countries.slice(0, 10));
+
+//Find the middle country(ies) in the countries array
+countries.length % 2 !== 0
+  ? console.log(countries[Math.ceil(countries.length / 2) - 1])
+  : console.log(
+      countries[Math.floor(countries.length / 2 - 2)],
+      countries[Math.floor(countries.length / 2 - 1)]
+    );
+
+//Divide the countries array into two equal arrays if it is even. if not, add one more country to the first half
+
+let firstHalf = [];
+let secondHalf = [];
+
+let isEven = countries.length % 2 !== 0 ? false : true;
+
+isEven
+  ? (firstHalf.push(...countries.slice(0, countries.length / 2)),
+    secondHalf.push(...countries.slice(countries.length / 2, countries.length)))
+  : (firstHalf.push(...countries.slice(0, Math.ceil(countries.length / 2))),
+    secondHalf.push(
+      ...countries.slice(Math.ceil(countries.length / 2), countries.length)
+    ));
+
+console.log(isEven);
+console.log(countries.length);
+console.log(firstHalf.length, firstHalf);
+console.log(secondHalf.length, secondHalf);
+
+console.log("New change");