#22 - JavaScript

Roadmap/22 - FUNCIONES DE ORDEN SUPERIOR/javascript/RicMonster1.js

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+//EJERCICIO
+let arr = [1, 2, 3];
+
+console.log(arr.map((n) => n * 2));
+
+Array.prototype.customMap = function (callback) {
+	let result = [];
+	for (let i = 0; i < this.length; i++) {
+		let element = callback(this[i]);
+		result.push(element);
+	}
+	return result;
+};
+
+console.log(arr.customMap((n) => n * 2));
+
+//EXTRA
+const myStudents = [];
+const bestStudents = [];
+const failedStudents = [];
+
+class Student {
+	constructor(name, grades, birthDate) {
+		this.name = name;
+		this.birthDate = birthDate;
+		this.grades = grades;
+		this.age = this.getAge();
+		this.average = this.getAverage();
+
+		myStudents.push(this);
+
+		if (this.average >= 9) {
+			bestStudents.push(this);
+		}
+
+		if (this.average < 5) {
+			failedStudents.push(this);
+		}
+	}
+
+	getAverage() {
+		let result = 0;
+		this.grades.forEach((element) => {
+			result = result + element;
+		});
+		let average = result / this.grades.length;
+		return average;
+	}
+
+	getAge() {
+		let now = new Date();
+		let age =
+			(now.getTime() - this.birthDate.getTime()) / (365 * 24 * 60 * 60 * 1000);
+		return age;
+	}
+}
+
+new Student('Sophie', [8, 8, 7, 9], new Date(2003, 8, 21));
+new Student('Rebeca', [8, 9, 10, 9], new Date(2001, 4, 16));
+new Student('David', [7, 7, 9, 8], new Date(2003, 0, 15));
+new Student('Eliezer', [4, 6, 7, 5], new Date(2005, 1, 21));
+new Student('Robert', [10, 10, 10, 9], new Date(2002, 0, 16));
+new Student('Erika', [10, 6, 6, 9], new Date(2003, 0, 20));
+new Student('Tadeo', [4, 6, 3, 5], new Date(2004, 0, 2));
+
+function getHighestAverage() {
+	let result;
+	let average = 0;
+	myStudents.forEach((element) => {
+		if (element.average > average) {
+			average = element.average;
+			result = element;
+		}
+	});
+	return result;
+}
+
+let highestAverage = getHighestAverage();
+
+let sortedByAverage = myStudents.toSorted((a, b) => {
+	return b.average - a.average;
+});
+
+let sortedByAge = myStudents.toSorted((a, b) => {
+	return a.getAge() - b.getAge();
+});
+
+console.log(`\nCANTIDAD DE ESTUDIANTES: ${myStudents.length}`);
+
+console.log('\nLISTA DE PROMEDIOS');
+
+sortedByAverage.customMap((element) => {
+	console.log(`\n${element.name}: ${element.average}`);
+});
+
+console.log(`\nMEJORES ESTUDIANTES: ${bestStudents.length}`);
+
+bestStudents.customMap((element) => {
+	console.log(`\n${element.name}: ${element.average}`);
+});
+
+console.log(`\nESTUDIANTES REPROBADOS: ${failedStudents.length}`);
+failedStudents.customMap((element) => {
+	console.log(`\n${element.name}: ${element.average}`);
+});
+
+console.log('\nLISTA DE NACIMIENTOS');
+
+sortedByAge.customMap((element) => {
+	console.log(`\n${element.name}: ${element.birthDate.toLocaleString()}`);
+	console.log(`${Math.floor(element.age)} años`);
+});
+
+console.log('\nMEJOR PROMEDIO DE LA CLASE');
+
+console.log(
+	`\nFelicidades a ${highestAverage.name}. Con un ${highestAverage.average} se ha coronado como el mejor promedio de la clase`
+);