programming assignment array and object iteration coursera

public class Deque<Item> implements Iterable<Item> { // construct an empty deque public Deque() // is the deque empty? public boolean isEmpty() // return the number of items on the deque public int size() // add the item to the front public void addFirst(Item item) // add the item to the back public void addLast(Item item) // remove and return the item from the front public Item removeFirst() // remove and return the item from the back public Item removeLast() // return an iterator over items in order from front to back public Iterator<Item> iterator() // unit testing (required) public static void main(String[] args) }

public class RandomizedQueue<Item> implements Iterable<Item> { // construct an empty randomized queue public RandomizedQueue() // is the randomized queue empty? public boolean isEmpty() // return the number of items on the randomized queue public int size() // add the item public void enqueue(Item item) // remove and return a random item public Item dequeue() // return a random item (but do not remove it) public Item sample() // return an independent iterator over items in random order public Iterator<Item> iterator() // unit testing (required) public static void main(String[] args) }

~/Desktop/queues> cat distinct.txt A B C D E F G H I ~/Desktop/queues> java Permutation 3 C G A ~/Desktop/queues> java Permutation 3 E F G ~/Desktop/queues> cat duplicates.txt AA BB BB BB BB BB CC CC ~/Desktop/queues> java Permutation 8 BB AA BB CC BB BB CC BB

public class Permutation { public static void main(String[] args) }

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Programming Assignment: Array and object iteration Solution

In this article i am gone to share Programming with JavaScript by meta Week 3 | Programming Assignment: Array and object iteration Solution with you..

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Visit this link:  Programming Assignment: Building an object-oriented program Solution

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Task: Iterate Over an Array

In this exercise, you’ll use the for….of loop to iterate over an array and to iterate over an object’s own properties.

Step 1.  You are given an array of dairy products:

The expected output should be:

Step 2.  You are given the following starter code:

Step 3.  Using the same starter code as in task 2, create a function called `animalCan` and within it, loop over all the properties in both the bird object and its prototype – the animal object – using the for…in loop.

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Iterate Over an Array

In this exercise, you'll use the for....of loop to iterate over an array and to iterate over an object's own properties.

Step 1. You are given an array of dairy products:

Create a function called logDairy. Within it, console log each of the items in the dairy array, using the for...of loop. The expected output should be:

Step 2. You are given the following starter code:

Create a function called birdCan , within it, loop over the bird object's properties and console log each one, using the for...of loop. Remember, you need to console log both the key and the value of each of the bird object's properties.

Step 3. Using the same starter code as in task 2, create a function called animalCan and within it, loop over all the properties in both the bird object and its prototype - the animal object - using the for...in loop.

// Task 1 function logDairy() { const logDairy = ['cheese', 'sour cream', 'milk', 'yogurt', 'ice cream', 'milkshake']; for (let i = 0; i < logDairy.length; i++) { console.log(logDairy[i]) } } logDairy(); // Task 2 function birdCan() { const animal = { canJump: true }; const bird = Object.create(animal); bird.canFly = true; bird.hasFeathers = true; for (prop of Object.keys(bird)) { console.log(prop + ":" + bird[prop]) } } birdCan(); // Task 3 function animalCan() { const animal = { canJump: true }; const bird = Object.create(animal); bird.canFly = true; bird.hasFeathers = true; for (prop in animal) { console.log(prop); } for (prop in bird) { console.log(prop); } } animalCan();

I have passed task 1 but not 2nd and 3rd

Passed: Console logged expected values for logDairy FAILED: Console logged expected values for birdCan - returned canFly:truehasFeathers:true but expected canFly: truehasFeathers: true FAILED: Console logged expected values for animalCan - returned canJumpcanFlyhasFeatherscanJump but expected canFly: truehasFeathers: truecanJump: true

tell me where did i go wrong?

• 1 Can you spot the difference between canFly:true , and canFly: true ? –  C3roe Commented Nov 22, 2022 at 12:02

5 Answers 5

• As it’s currently written, your answer is unclear. Please edit to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers in the help center . –  Community Bot Commented Nov 25, 2022 at 8:48

//Step:1 var dairy = ['cheese', 'sour cream', 'milk', 'yogurt', 'ice cream', 'milkshake'] // function to show the output function logDairy(product){ console.log(product) } // for of loop to iterate over the array for(product of dairy){ logDairy(product) } //Step:2 // in this step the condition was to loop over the object using for of loop // for of loop can only be used on arrays // so we will create an array or keys from the object using Object.key(obj) and use for of loop on the object, // we will receive a single key for each iteration, the key will be passed down to function as param // then we will use bracket notation to find the value of the key. // animal object const animal = { canJump: true }; // sending obj as param animalCan(animal) //bird object const bird = Object.create(animal); bird.canFly = true; bird.hasFeathers = true; // sending object as param animalCan(bird) // function to show key value from object function birdCan(prop){ console.log(`${prop}: ${bird[prop]}`) } // for of loop to iterate over the keys array for(const prop of Object.keys(bird)){ // sending keys to function as param birdCan(prop) } //Step:3 // using for in loop we can loop over the object sent as param and iterate over it to genrate results // animalCan function to loop over the object sent as param function animalCan(param){ for(const prop in param){ console.log(`${prop}:${param[prop]}`) } }

this should be enough to understand

// Task 1 function logDairy() { var dairy = ['cheese', 'sour cream', 'milk', 'yogurt', 'ice cream', 'milkshake'] for (word of dairy) { console.log(word) } } logDairy() console.log(); // Task 2 const animal = { canJump: true }; const bird = Object.create(animal); bird.canFly = true; bird.hasFeathers = true; function birdCan() { for (const [key, value] of Object.entries(bird)) { console.log(`${key}: ${value}`); } } birdCan(); console.log(); // Task 3 function animalCan() { for (const key in bird) { console.log(`${key}: ${bird[key]}`); } } animalCan();

• Your answer could be improved with additional supporting information. Please edit to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers in the help center . –  Community Bot Commented Dec 30, 2022 at 19:42

Successful Passed Test

Passed: Console logged expected values for logDairy Passed: Console logged expected values for birdCan Passed: Console logged expected values for animalCan

• Expected Output follow to our code output console and relate to README.md file with matching , and loop variable declare important for pass test –  Nazir Rizwan Commented Apr 24, 2023 at 22:32

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Coursera Programming Assignment: Array and object iteration solution! Course Name: Programming with JavaScript, Week-3, Topic: Array and object iteration