diff --git a/assignments/arrays.js b/assignments/arrays.js index 1dbf8bd35..4b6e5f76b 100644 --- a/assignments/arrays.js +++ b/assignments/arrays.js @@ -3,57 +3,67 @@ // The car dealer has all of their inventory housed in the array seen below. Scroll down past the data to find out how you can help the car dealer. let inventory = [ - { id: 1, car_make: "Lincoln", car_model: "Navigator", car_year: 2009 }, - { id: 2, car_make: "Mazda", car_model: "Miata MX-5", car_year: 2001 }, - { id: 3, car_make: "Land Rover", car_model: "Defender Ice Edition", car_year: 2010 }, - { id: 4, car_make: "Honda", car_model: "Accord", car_year: 1983 }, - { id: 5, car_make: "Mitsubishi", car_model: "Galant", car_year: 1990 }, - { id: 6, car_make: "Honda", car_model: "Accord", car_year: 1995 }, - { id: 7, car_make: "Smart", car_model: "Fortwo", car_year: 2009 }, - { id: 8, car_make: "Audi", car_model: "4000CS Quattro", car_year: 1987 }, - { id: 9, car_make: "Ford", car_model: "Windstar", car_year: 1996 }, - { id: 10, car_make: "Mercedes-Benz", car_model: "E-Class", car_year: 2000 }, - { id: 11, car_make: "Infiniti", car_model: "G35", car_year: 2004 }, - { id: 12, car_make: "Lotus", car_model: "Esprit", car_year: 2004 }, - { id: 13, car_make: "Chevrolet", car_model: "Cavalier", car_year: 1997 }, - { id: 14, car_make: "Dodge", car_model: "Ram Van 1500", car_year: 1999 }, - { id: 15, car_make: "Dodge", car_model: "Intrepid", car_year: 2000 }, - { id: 16, car_make: "Mitsubishi", car_model: "Montero Sport", car_year: 2001 }, - { id: 17, car_make: "Buick", car_model: "Skylark", car_year: 1987 }, - { id: 18, car_make: "Geo", car_model: "Prizm", car_year: 1995 }, - { id: 19, car_make: "Oldsmobile", car_model: "Bravada", car_year: 1994 }, - { id: 20, car_make: "Mazda", car_model: "Familia", car_year: 1985 }, - { id: 21, car_make: "Chevrolet", car_model: "Express 1500", car_year: 2003 }, - { id: 22, car_make: "Jeep", car_model: "Wrangler", car_year: 1997 }, - { id: 23, car_make: "Eagle", car_model: "Talon", car_year: 1992 }, - { id: 24, car_make: "Toyota", car_model: "MR2", car_year: 2003 }, - { id: 25, car_make: "BMW", car_model: "525", car_year: 2005 }, - { id: 26, car_make: "Cadillac", car_model: "Escalade", car_year: 2005 }, - { id: 27, car_make: "Infiniti", car_model: "Q", car_year: 2000 }, - { id: 28, car_make: "Suzuki", car_model: "Aerio", car_year: 2005 }, - { id: 29, car_make: "Mercury", car_model: "Topaz", car_year: 1993 }, - { id: 30, car_make: "BMW", car_model: "6 Series", car_year: 2010 }, - { id: 31, car_make: "Pontiac", car_model: "GTO", car_year: 1964 }, - { id: 32, car_make: "Dodge", car_model: "Ram Van 3500", car_year: 1999 }, - { id: 33, car_make: "Jeep", car_model: "Wrangler", car_year: 2011 }, - { id: 34, car_make: "Ford", car_model: "Escort", car_year: 1991 }, - { id: 35, car_make: "Chrysler", car_model: "300M", car_year: 2000 }, - { id: 36, car_make: "Volvo", car_model: "XC70", car_year: 2003 }, - { id: 37, car_make: "Oldsmobile", car_model: "LSS", car_year: 1997 }, - { id: 38, car_make: "Toyota", car_model: "Camry", car_year: 1992 }, - { id: 39, car_make: "Ford", car_model: "Econoline E250", car_year: 1998 }, - { id: 40, car_make: "Lotus", car_model: "Evora", car_year: 2012 }, - { id: 41, car_make: "Ford", car_model: "Mustang", car_year: 1965 }, - { id: 42, car_make: "GMC", car_model: "Yukon", car_year: 1996 }, - { id: 43, car_make: "Mercedes-Benz", car_model: "R-Class", car_year: 2009 }, - { id: 44, car_make: "Audi", car_model: "Q7", car_year: 2012 }, - { id: 45, car_make: "Audi", car_model: "TT", car_year: 2008 }, - { id: 46, car_make: "Oldsmobile", car_model: "Ciera", car_year: 1995 }, - { id: 47, car_make: "Volkswagen", car_model: "Jetta", car_year: 2007 }, - { id: 48, car_make: "Dodge", car_model: "Magnum", car_year: 2008 }, - { id: 49, car_make: "Chrysler", car_model: "Sebring", car_year: 1996 }, - { id: 50, car_make: "Lincoln", car_model: "Town Car", car_year: 1999 } -]; + { id: 1, car_make: 'Lincoln', car_model: 'Navigator', car_year: 2009 }, + { id: 2, car_make: 'Mazda', car_model: 'Miata MX-5', car_year: 2001 }, + { + id: 3, + car_make: 'Land Rover', + car_model: 'Defender Ice Edition', + car_year: 2010 + }, + { id: 4, car_make: 'Honda', car_model: 'Accord', car_year: 1983 }, + { id: 5, car_make: 'Mitsubishi', car_model: 'Galant', car_year: 1990 }, + { id: 6, car_make: 'Honda', car_model: 'Accord', car_year: 1995 }, + { id: 7, car_make: 'Smart', car_model: 'Fortwo', car_year: 2009 }, + { id: 8, car_make: 'Audi', car_model: '4000CS Quattro', car_year: 1987 }, + { id: 9, car_make: 'Ford', car_model: 'Windstar', car_year: 1996 }, + { id: 10, car_make: 'Mercedes-Benz', car_model: 'E-Class', car_year: 2000 }, + { id: 11, car_make: 'Infiniti', car_model: 'G35', car_year: 2004 }, + { id: 12, car_make: 'Lotus', car_model: 'Esprit', car_year: 2004 }, + { id: 13, car_make: 'Chevrolet', car_model: 'Cavalier', car_year: 1997 }, + { id: 14, car_make: 'Dodge', car_model: 'Ram Van 1500', car_year: 1999 }, + { id: 15, car_make: 'Dodge', car_model: 'Intrepid', car_year: 2000 }, + { + id: 16, + car_make: 'Mitsubishi', + car_model: 'Montero Sport', + car_year: 2001 + }, + { id: 17, car_make: 'Buick', car_model: 'Skylark', car_year: 1987 }, + { id: 18, car_make: 'Geo', car_model: 'Prizm', car_year: 1995 }, + { id: 19, car_make: 'Oldsmobile', car_model: 'Bravada', car_year: 1994 }, + { id: 20, car_make: 'Mazda', car_model: 'Familia', car_year: 1985 }, + { id: 21, car_make: 'Chevrolet', car_model: 'Express 1500', car_year: 2003 }, + { id: 22, car_make: 'Jeep', car_model: 'Wrangler', car_year: 1997 }, + { id: 23, car_make: 'Eagle', car_model: 'Talon', car_year: 1992 }, + { id: 24, car_make: 'Toyota', car_model: 'MR2', car_year: 2003 }, + { id: 25, car_make: 'BMW', car_model: '525', car_year: 2005 }, + { id: 26, car_make: 'Cadillac', car_model: 'Escalade', car_year: 2005 }, + { id: 27, car_make: 'Infiniti', car_model: 'Q', car_year: 2000 }, + { id: 28, car_make: 'Suzuki', car_model: 'Aerio', car_year: 2005 }, + { id: 29, car_make: 'Mercury', car_model: 'Topaz', car_year: 1993 }, + { id: 30, car_make: 'BMW', car_model: '6 Series', car_year: 2010 }, + { id: 31, car_make: 'Pontiac', car_model: 'GTO', car_year: 1964 }, + { id: 32, car_make: 'Dodge', car_model: 'Ram Van 3500', car_year: 1999 }, + { id: 33, car_make: 'Jeep', car_model: 'Wrangler', car_year: 2011 }, + { id: 34, car_make: 'Ford', car_model: 'Escort', car_year: 1991 }, + { id: 35, car_make: 'Chrysler', car_model: '300M', car_year: 2000 }, + { id: 36, car_make: 'Volvo', car_model: 'XC70', car_year: 2003 }, + { id: 37, car_make: 'Oldsmobile', car_model: 'LSS', car_year: 1997 }, + { id: 38, car_make: 'Toyota', car_model: 'Camry', car_year: 1992 }, + { id: 39, car_make: 'Ford', car_model: 'Econoline E250', car_year: 1998 }, + { id: 40, car_make: 'Lotus', car_model: 'Evora', car_year: 2012 }, + { id: 41, car_make: 'Ford', car_model: 'Mustang', car_year: 1965 }, + { id: 42, car_make: 'GMC', car_model: 'Yukon', car_year: 1996 }, + { id: 43, car_make: 'Mercedes-Benz', car_model: 'R-Class', car_year: 2009 }, + { id: 44, car_make: 'Audi', car_model: 'Q7', car_year: 2012 }, + { id: 45, car_make: 'Audi', car_model: 'TT', car_year: 2008 }, + { id: 46, car_make: 'Oldsmobile', car_model: 'Ciera', car_year: 1995 }, + { id: 47, car_make: 'Volkswagen', car_model: 'Jetta', car_year: 2007 }, + { id: 48, car_make: 'Dodge', car_model: 'Magnum', car_year: 2008 }, + { id: 49, car_make: 'Chrysler', car_model: 'Sebring', car_year: 1996 }, + { id: 50, car_make: 'Lincoln', car_model: 'Town Car', car_year: 1999 } +] // Example 1 for loop: @@ -75,30 +85,102 @@ let inventory = [ // ==== Challenge 1 ==== // The dealer can't recall the information for a car with an id of 33 on his lot. Help the dealer find out which car has an id of 33 by logging the car's year, make, and model in the console log provided to you below: -console.log(`Car 33 is a *car year goes here* *car make goes here* *car model goes here*`); + +// ================ SIMPLE SOLUTION: ===================================================== +// note: no need to iterate through array -> car objects aleady ordered -> we can simply use car id - 1 +// console.log(`Car 33 is a ` + inventory[32].car_year + ` ` + inventory[32].car_make + ` ` + inventory[32].car_model); +// ================ BETTER SOLUTION: ===================================================== +// note: we can make a function that takes both the id and the car array and returns the information + +const returnCarInfo = (id, cars) => { + const carIndex = id - 1 + // edge case if carIndex out of bounds + if (carIndex > cars[cars.length - 1]) return 'id out of bounds' + const car = cars[carIndex] + return ( + `Car 33 is a ` + car.car_year + ` ` + car.car_make + ` ` + car.car_model + ) +} +console.log(returnCarInfo(33, inventory)) // ==== Challenge 2 ==== // The dealer needs the information on the last car in their inventory. What is the make and model of the last car in the inventory? Log the make and model into the console. -let lastCar = 0; -console.log(); + +// including car_year -> looks better that way -> this would be important to a used-car sales person +const returnLastCarInfo = cars => { + const lastCar = cars[cars.length - 1] + return ( + `The last car in the inventory is a ` + + lastCar.car_year + + ` ` + + lastCar.car_make + + ` ` + + lastCar.car_model + ) +} + +console.log(returnLastCarInfo(inventory)) // ==== Challenge 3 ==== // The marketing team wants the car models listed alphabetically on the website. Sort all the car model names into alphabetical order and log the results in the console -let carModels = []; -let carModelsSorted = []; -console.log(); + +const returnModelsAlphabetically = cars => { + const modelArr = [] + cars.forEach(car => { + modelArr.push(car.car_model) + }) + modelArr.sort(); + return modelArr; +} +const sortedAlphabetically = returnModelsAlphabetically(inventory) +console.log("Here are the car models, listed alphabetically: ") +sortedAlphabetically.forEach(item => { + console.log(item) +}) // ==== Challenge 4 ==== // The accounting team needs all the years from every car on the lot. Create a new array from the dealer data containing only the car years and log the result in the console. -let carYears = []; -console.log(); + +const returnCarYears = (cars) => { + const years = [] + cars.forEach((car) => { + years.push(car.car_year) + }) + return years; +} + +const years = returnCarYears(inventory); +years.sort() +console.log(years); // ==== Challenge 5 ==== // The car lot manager needs to find out how many cars are older than the year 2000. Using the carYears array you just created, find out how many cars were made before the year 2000 by populating the array oldCars and logging it's length. -let oldCars = []; -console.log(); +const returnCarsBeforeYear2000 = () => { + const oldCars = [] + years.forEach((year) => { + if (year < '2000') { + oldCars.push(year); + } + }) + return oldCars.length; +} + +const carsBeforeYear2000 = returnCarsBeforeYear2000() +console.log("cars before year 2000: ", carsBeforeYear2000) + // ==== Challenge 6 ==== // A buyer is interested in seeing only BMW and Audi cars within the inventory. Return an array that only contains BMW and Audi cars. Once you have populated the BMWAndAudi array, use JSON.stringify() to show the results of the array in the console. -let BMWAndAudi = []; -console.log(); + +const returnAudiOrBMW = (cars) => { + const luxury = [] + cars.forEach((car) => { + if (car.car_make === 'BMW' || car.car_make === 'Audi') { + luxury.push(car); + } + }) + return luxury +} + +const only = JSON.stringify(returnAudiOrBMW(inventory)) +console.log(only) \ No newline at end of file diff --git a/assignments/function-conversion.js b/assignments/function-conversion.js index 55f57ef62..84ab3aeaf 100644 --- a/assignments/function-conversion.js +++ b/assignments/function-conversion.js @@ -5,26 +5,57 @@ // }; // myFunction(); +const myFunction = () => { + console.log("Function was invoked!!!!") +} + +myFunction() + // let anotherFunction = function (param) { // return param; // }; // anotherFunction("Example"); +const anotherFunction = (param) => { + return param; +} +console.log(anotherFunction("Example 2")) // let add = function (param1, param2) { // return param1 + param2; // }; // add(1,2); +const add = (a, b) => { + return a + b +} + +console.log(add(10, 10)) + // let subtract = function (param1, param2) { // return param1 - param2; // }; // subtract(1,2); +const subtract = (a, b) => { + return a - b +} +console.log(subtract(10, 8)) // Stretch -// exampleArray = [1,2,3,4]; +const exampleArray = [1,2,3,4]; // const triple = exampleArray.map(function (num) { // return num * 3; // }); -// console.log(triple); \ No newline at end of file +// console.log(triple); +const triple = (arr) => { + const triples = [] + arr.forEach((num) => { + triples.push(num * 3) + }) + return triples +} + +const triples = triple(exampleArray) +console.log(triples) + diff --git a/assignments/objects.js b/assignments/objects.js index 798d5e0cf..2eabf539f 100644 --- a/assignments/objects.js +++ b/assignments/objects.js @@ -1,7 +1,8 @@ // Let's get some practice writing a few objects for a new group of interns at a small business. // ==== Challenge 1: Writing Objects ==== -// HR needs some information on the new interns put into a database. Given an id, email, first name, and gender. Create an object for each person in the company list: +// HR needs some// // information on the new interns put into a database. +// Given an id, email, first name, and gender. Create an object for each person in the company list: // 1, mmelloy0@psu.edu, Mitzi, F // 2, kdiben1@tinypic.com, Kennan, M @@ -9,6 +10,22 @@ // 4, gmartinson3@illinois.edu, Gannie, M // 5, adaine5@samsung.com, Antonietta, F +// we can just create a class and add the methods +// greet() and multiplyNums to all Interns from the start +class Intern { + constructor(id, email, name, gender) { + this.id = id; + this.email = email; + this.name = name; + this.gender = gender + } + greet() { + console.log("Hello, my name is " + this.name) + } + multiplyNums(a, b) { + return a * b + } +} // Example format of an intern object: 1, examples@you.edu, Example, F const example = { id: 0, @@ -19,27 +36,37 @@ const example = { // Write your intern objects here: +const interns = [ + new Intern(1, 'mmelloy0@psu.edu', 'Mitzi', 'F'), + new Intern(2, 'kdiben1@tinypic.com', 'Kennan', 'M'), + new Intern(3, 'knummery2@wikimedia.org', 'Keven', 'M'), + new Intern(4, 'gmartinson3@illinois.edu', 'Gannie', 'M'), + new Intern(5, 'adaine5@samsung.com', 'Antionetta', 'F') +] + +// console.log("Here are the interns: ", interns) // ==== Challenge 2: Reading Object Data ==== // Once your objects are created, log out the following requests from HR into the console: // Mitzi's name - +console.log(interns[0].name) // Kennan's ID - +console.log(interns[1].id) // Keven's email - +console.log(interns[2].email) // Gannie's name - +console.log(interns[3].name) // Antonietta's Gender - +console.log(interns[4].gender) // ==== Challenge 3: Object Methods ==== // Give Kennan the ability to say "Hello, my name is Kennan!" Use the console.log provided as a hint. // console.log(kennan.speak()); +interns[1].greet() // Antonietta loves math, give her the ability to multiply two numbers together and return the product. Use the console.log provided as a hint. //console.log(antonietta.multiplyNums(3,4)); - +console.log(interns[3].multiplyNums(3, 4)) // === Great work! === Head over to the the arrays.js. You may come back and attempt the Stretch Challenge once you have completed the challenges in arrays.js and function-conversion.js. // ==== Stretch Challenge: Nested Objects and the this keyword ==== @@ -48,8 +75,34 @@ const example = { // 2. Nest a child object in the parent object with name and age as well. The name will be George and the age will be 50. // 3. Nest a grandchild object in the child object with properties for name and age. The name will be Sam and the age will be 30 // 4. Give each of the objects the ability to speak their names using the this keyword. +class Parent { + constructor(name, age) { + this.name = name; + this.age = age; + } + greet() { + console.log("My name is " + this.name + " and I am " + this.age + " years old!"); + } +} + +class Child extends Parent { + constructor(childName, childAge) { + super(childName, childAge) + } +} + +class GrandChild extends Child { + constructor(grandchildName, grandchildAge) { + super(grandchildName, grandchildAge); + } +} -const parent = {} +const Susan = new Parent('Susan', 70) +const George = new Child('George', 50) +const Sam = new GrandChild('Sam', 30); +Susan.greet(); +George.greet(); +Sam.greet(); // Log the parent object's name diff --git a/assignments/quickSort.js b/assignments/quickSort.js new file mode 100644 index 000000000..f93b23e72 --- /dev/null +++ b/assignments/quickSort.js @@ -0,0 +1,23 @@ +const integers = [19, 10, 11, 44, 33] + +const quickSort = numbers => { + let pI = 0 // partition index (from where we're comparing) + let cI = 1 // current index (where we're at) + if (numbers.length < 2) return false // edge case if arr has less than two items + // need while loop + while (cI <= numbers.length - 1) { + console.log('in while loop') + if (numbers[pI] > numbers[cI]) { + // swap the two values + // increment pI and cI + let tmp = numbers[pI] + numbers[pI] = numbers[cI] + numbers[cI] = tmp + } + pI += 1 + cI += 1 + } + return numbers +} + +console.log(quickSort(integers))