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17-functions-exercises.js
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277 lines (260 loc) · 8.92 KB
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/*
Clase 32 - Ejercicios: Funciones
Vídeo: https://youtu.be/1glVfFxj8a4?t=14146
*/
// NOTA: Explora diferentes sintaxis de funciones para resolver los ejercicios
console.log("Repaso de lo anterior Map, Set, Array")
//Map
let theMap = new Map ([
["dog", true],
["Male", false],
["Age", 3]
])
console.log(theMap)
let theSet = new Set ([
"Daniel",
"Luz",
"Andrea"
])
console.log(theSet)
console.log("1. Crea una función que reciba dos números y devuelva su suma")
//Funcion simple:
function add(a=0, b=0){
console.log(`${a} + ${b} = ` + (a+b))
}
add(10,10)
//Funcion Anonima
let anonymAdd = function (a=0, b=0){
console.log(`La suma de ${a} y ${b} es ` + (a+b))
}
anonymAdd(5,8)
//arrow function
let arrowAdd = (a=0,b=0) => console.log(`${a} + ${b} = ` + (a+b))
arrowAdd(8,8)
console.log("++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++")
console.log("2. Crea una función que reciba un array de números y devuelva el mayor de ellos")
const numbers = [7,14,700,21,28]
let bigOne = numbers[0]
function theBig (array){
for (let i = 1; i < array.length; i++){
if(array[i] > bigOne){
bigOne = array[i]
}
}
console.log(`the biggest number is: ${bigOne}`)
};
theBig(numbers)
console.log("________________________________________________-")
//Lo haré otra vez:
const newNumbers = [1,45,7,10,3456,589]
bigOne = newNumbers[0]
let newBig = (array) => {
for (let i = 1; i < array.length;i++) {
if(array[i] > bigOne){
bigOne = array[i];
}
}
console.log(`the biggest number is: ${bigOne}`)
}
newBig(newNumbers)
console.log("++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++")
console.log("3. Crea una función que reciba un string y devuelva el número de vocales que contiene")
let phrase = "ooeeiiaaeo"
let vocals = "aeiouAEIOU"
let counter = 0
function letsCountVocals(string){
for (const value of string) {
if(vocals.includes(value)){
counter++
}
}
console.log("El número de vocales que contiene es: " + counter)
};
letsCountVocals(phrase);
console.log("++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++")
console.log("4. Crea una función que reciba un array de strings y devuelva un nuevo array con las strings en mayúsculas")
let words = ["Give it back in Uppers", "Give back this one"]
let toUpper = function (string){
for (const value of string) {
console.log(`Este es el array en minusculas: ${value}`)
console.log("Este es el array en mayusculas: " + value.toLocaleUpperCase())
}
};
toUpper(words);
console.log("++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++")
console.log("5. Crea una función que reciba un número y devuelva true si es primo, y false en caso contrario")
let isItPrime = function (number){
if (number <= 1 ) {
console.log(`El número ${number} es primo?: ${false}`)
return;
} else if(number <= 3){
console.log(`El número ${number} es primo?: ${true}`)
return;
} else if(number % 2 === 0 || number % 3 === 0){
console.log(`El número ${number} es primo?: ${false}`)
return;
} else{
for (let i = 5; i * i <= number; i += 6) {
if (number % i === 0 || number % (i + 2) === 0) {
console.log(`El número ${number} es primo?: ${false}`)
return;
}
}
console.log(`El número ${number} es primo?: ${true}`)
return;
}
}
isItPrime(368)
console.log("++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++")
console.log("6. Crea una función que reciba dos arrays y devuelva un nuevo array que contenga los elementos comunes entre ambos")
let pets1 = ["Dog", "Cat", "Horse", "Parrot"]
let pets2 = ["Lion", "Tiger", "Cat", "Horse"]
let commonAnimals = []
let giveMeAnimalsInCommon2 = function(array1, array2){
let array3 = array1.concat(array2)
let vistos = new Set ();
let duplicados = new Set();
let duplicateElements = array3.filter((element) =>{
if(vistos.has(element)){
duplicados.add(element)
return true;
}else {
vistos.add(element)
return false;
}
})
duplicateElements = Array.from(duplicados)
console.log(`Los elementos duplicados son: ${duplicateElements}`)
}
giveMeAnimalsInCommon2(pets1,pets2)
/* Creé una funcion que pasa los valores de las arrays a un MAp
y elimina los valores repetidos */
let giveMeAnimalsInCommon = function (array1, array2){
commonAnimals = array1.concat(array2)
let commonAnimalsSet = new Set (commonAnimals)
let $commonAnimals = Array.from(commonAnimalsSet)
console.log(`Lista con los elementos repetidos eliminados: ${$commonAnimals}`)
}
giveMeAnimalsInCommon(pets1, pets2)
console.log("++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++")
console.log(" 7. Crea una función que reciba un array de números y devuelva la suma de todos los números pares")
let $numbers = [6, 7, 5, 4, 1, 0, 9, 10, 12, 24, 35, 77, 89]
let isEven = []
function addEvenNumbers(array){
let suma = 0
for (const even of array) {
if(even % 2 === 0){
isEven.push(even)
}
}
console.log(`The list of even numbers are: ${isEven}`)
for (const element of isEven) {
suma += element
}
console.log(`the result of it adds is : ${suma}`)
};
addEvenNumbers($numbers);
$numbers = [5, 25, 15, 10, 4, 6]
isEven = []
let addEven = function(array){
let add = 0
array.forEach(element => {
if(element % 2 === 0){
isEven.push(element)
}
});
console.log(`Los números pares son: ${isEven}`)
for (const even of isEven) {
add += even
}
console.log(`La suma de estos es: ${add}`)
};
addEven($numbers);
console.log("__________________________________________________")
$numbers = [2,7,4,5,9,10,10]
isEven = []
let addEven2 = function(array){
let suma = 0
array.forEach(element => {
if(element % 2 === 0){
isEven.push(element)
}
});
console.log(`The even elements are: ${isEven}`)
for (const even of isEven) {
suma += even
}
console.log(`the add of all items are: ${suma}`)
}
addEven2($numbers)
console.log("__________________________________")
//Voy a sumar los impares
$numbers = [2,4,5,7,9,12,14]
let isOdd = []
let addOddNumber = (array) => {
let add = 0
for (const element of array) {
if(element % 2 === 1){
console.log(`The add numbers are: ${element}`)
add += element
}
}
console.log(`The sumatory of odd numbers is: ${add}`)
};
addOddNumber($numbers);
console.log("++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++")
console.log("8. Crea una función que reciba un array de números y devuelva un nuevo array con cada número elevado al cuadrado")
$numbers = [2, 3, 5, 8]
let numberSqr = []
let numbPow = function (array){
array.forEach(element => {
let elevator = Math.pow(element, 2) // etambien funciona asi: element ** 2
numberSqr.push(elevator)
});
console.log(`The original array is: ${$numbers}`)
console.log(`The numbers elevated to 2 are: ${numberSqr}`)
};
numbPow($numbers)
console.log("________________________________________________________")
let myArray = [8, 9, 5, 4, 3, 2,]
let myNewArray = []
let elevatingNumbers = (array) => {
array.forEach(element => {
let sqr = Math.pow(element,2)
myNewArray.push(sqr)
});
console.log(`The new array with elements to sqr is: ${myNewArray}`)
};
elevatingNumbers(myArray)
console.log("___________________________________________________________________")
let $myArray = [50, 8, 2, 2, 6, 7, 9]
let $myNewArray = []
let sqr = 0
let elevatingNumbers2 = (array) => {
for (const element of array) {
sqr = Math.pow(element, 2)
$myNewArray.push(sqr)
}
console.log(`The new array with elements to sqr is: ${$myNewArray}`)
};
elevatingNumbers2($myArray)
console.log("++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++")
console.log(" 9. Crea una función que reciba una cadena de texto y devuelva la misma cadena con las palabras en orden inverso")
let $string = "please, invert this word"
let letsInvert = (string) => {
console.log(string.split("").reverse().join(""))
}
letsInvert($string)
console.log("++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++")
console.log("10. Crea una función que calcule el factorial de un número dado")
let num = 8
function factoriza (num){
if(num < 0){
console.log(-1)
}else if(num == 0){
console.log(1)
}else{
console.log((num * factoriza(num - 1)))
}
};
factoriza(num)