Merce0897

let a = 5
let b = 10

function swapValue(a, b) {
    let temp = a
    a = b
    b = temp
    console.log(a);
    console.log(b);
}

Merce0897

// Exercise 1
let input = 2

if (input % 2) {
    console.log('odd');
} else {
    console.log('even');
}

// Exercise 2

Merce0897

let nums = [1, 3, 5, 21, 56, 2, 7, 11, 15]
let target = 9

function twoSum(nums, target) {
    let output = []
    for (var i = 0; i < nums.length; i++) {
        output.push(i)
        output.push(i + 1)
        if (nums[output[0]] + nums[output[1]] === target) {
            return output

Merce0897

// Sign of the Product of an Array.
var arraySign = function(nums) {
    let product = 1
    for (let i = 0; i < nums.length; i++) {
        product *= nums[i]
    }
    if (product > 0) {
        return 1
    } else if (product < 0) {
        return -1

Merce0897

const peopleNameArray = ["William", "Collin", "Stephen"];

const showPeopleName = function (name) {
    console.log("Hello " + name);
}

peopleNameArray.forEach(showPeopleName)
peopleNameArray.forEach(showPeopleName)

Merce0897

// Challenge 1
const fName = "Vinh"
const lName = "Truong"
const age = 25
const profession = "FE Dev"
const salary = 10

console.log(`My name is ${fName} ${lName}, i'm ${age} years old. I work as ${profession} and make ${salary}$`);

Merce0897

const tinhDiem = (mon1, mon2, mon3, khuVuc, doiTuong, diemChuan) => {
    if (mon1 ===0 || mon2 === 0 || mon3 === 0) {
        return 'Rớt'
    }
    let tongDiem = mon1 + mon2 + mon3
    if (khuVuc === 'A') {
        tongDiem += 2
    } else if (khuVuc === 'B') {
        tongDiem += 1
    } else if (khuVuc === 'C') {

Merce0897

// Test 1
const subLength = (string,occurencies) => {
    let indexArray = []
    for (let i = 0; i < string.length; i++) {
        (string[i] === occurencies) ? indexArray.push(i) : false
    }
    return (indexArray.length > 2 || indexArray.length < 2) ? 0 : indexArray[1] - indexArray[0] + 1
}

// Test 2

Merce0897

let person = {
    first: "Alberto",
    last: "Montalesi"
}

const {first , last} = person
console.log(first,last);

const { facebook } = {
    ...person,

Merce0897

// Exercise 1
const indexOf = (arr, item) => {
    let output
    if (!arr.includes(item)) { output = -1 }
    for (const i in arr) {
        (arr[i] === item) ? output = i : false
    }
    return output
}
console.log(indexOf([1, 2, 3, 4], 3))