job-quest-intern-2018: A JavaScript repository from Basone01

TakeMeTour Internship Program 2018

Hi all applicants! Welcome to TakeMeTour Internship Program 2018. Being and intern at TakeMeTour is challenging so we have challenges for you! These challenges are designed to assess your learning skill, which is the fundamental and most important skill of great software developer. So I do not expect you to have full or any knowledge about the topic beforehand but it's your job to try to learn and answer those challenges.

Algorithm in Javascript

Code must be writted in Javascript language. The code will be tested with Node8, so you can use all Javascript features that equivalent to Node8.

Write a function that shift the elements of array to left or right by n elements in infinity loop. the function recevice 3 parameters, 1st is an array, 2nd the is direction ('left' or 'right'), 3rd is the number of elements will be shifted. For example,

> shift(['john', 'jane', 'sarah', 'alex'], 'left', 2)
['sarah', 'alex', 'john', 'jane']

> shift([1, 2, 3, 4 ,5], 'right', 3)
[3, 4, 5, 1, 2]

Answer:

const shift = (array = [], direction = "left", times = 1) => {
  const moddedTimes = times % array.length;
  let shiftedArray =
    direction === "left"
      ? [...array.slice(moddedTimes), ...array.slice(0, moddedTimes)]
      : [
          ...array.slice(array.length - moddedTimes, array.length),
          ...array.slice(0, array.length - moddedTimes)
        ];

  console.log(shiftedArray);
  return shiftedArray;
};

Download hero.json and write a code to caculate these values from hero.json

2.1 Average networth of all heroes
2.2 Average level for hero that has 'intelligent' as primary_attribute
2.3 Find the hero who got the most assist
2.4 Find the hero who got the worst kill/death ratio (ratio = kill/death)

Answer:

const heros = require("./hero.json");

const getProperty = (hero, property) => hero[property];
//getProps
const getLevel = hero => getProperty(hero, "level");
const getNetworth = hero => getProperty(hero, "networth");
const getAssist = hero => getProperty(hero, "assist");
const getKillDeathRate = hero => hero.kill / hero.death;

//For use getPropsFunc to find the sum
const calSumOfProperty = (heros, getPropFunc) => {
  return heros.reduce(
    (sumOfNetworth, hero) => sumOfNetworth + getPropFunc(hero),
    0
  );
};
//just cal the average
const calAverage = (sum, n) => sum / n;

//filter heros from primary attribute
const filerHeroByAttribute = (heros, attribute) =>
  heros.filter(hero => hero.primary_attribute === attribute);

//Use get Props to find min and max of a property from all heros
const findMaxOfProperty = (heros, getPropFunc) =>
  heros.reduce(
    (hero1, hero2) => (getPropFunc(hero1) > getPropFunc(hero2) ? hero1 : hero2)
  );

const findMinOfProperty = (heros, getPropFunc) =>
  heros.reduce(
    (hero1, hero2) => (getPropFunc(hero1) < getPropFunc(hero2) ? hero1 : hero2)
  );

//Misson
const findAverageOfNetworth = heros =>
  calAverage(calSumOfProperty(heros, getNetworth), heros.length);

const findAverageLevelOfIntHero = heros => {
  const intHeros = filerHeroByAttribute(heros, "intelligent");
  return calAverage(calSumOfProperty(intHeros, getLevel), intHeros.length);
};

const findTheMostAssistHero = heros => findMaxOfProperty(heros, getAssist);

const findTheWorstKillDeathRateHero = heros =>
  findMinOfProperty(heros, getKillDeathRate);

console.log(findAverageOfNetworth(heros));
console.log(findAverageLevelOfIntHero(heros));
console.log(findTheMostAssistHero(heros));
console.log(findTheWorstKillDeathRateHero(heros));

Simple Web Application: A joke from Chuck Norris.

This part of quest will be a challenging one. You are going to make a simple web application which allow users to get some joke from Chuck Norris himself.

Chuck Norris once ordered a Big Mac at Burger King, and got one.

Features

Users can get a joke from Chuck Norris API
Users has options to change number of result jokes, user's first name and last name
UI Design as you wish.

Technical description

Using data from REST API
Any tools & framework is allowed.
If you are using tools & framework which is same as our tech stack (React, Redux, styled-components, recompose etc.) will be a plus.
Any extra feature will be a plus.

> URL Here : ( https://basone01.github.io/job-quest-intern-2018/ )

Questions

Q1: What is GraphQL and how it is different from REST API?

A1: It like a new abstraction layer on the API, make the client can tell the API what data they need and what they need it to be like ( how many field, what field that they need , how depth of data ), by send these format to the API , then the API will find the data and format it as the client need , and everything happend in just 1 request and 1 API endpoint ( avoid the naming problem haha~ ).

Many features of GraphQL are hard to implements in REST API, in rest api clients can tell what they need too (but it will not end in 1 endpoint), but it will be hard to implemtents if you have many data.

Q2: Please explain how javascript benefits from cross-platform development

A2: Less learning time and more idea from another platform, make mobile dev can thing like web dev, and make web dev can thing like mobile dev, and make some project can share code to another platform and reuse it.

Q3: What do you expect to get from during an internship at TakeMeTour?

A3:

Coding javascript as your stack.
I've leant many techniqe from your developer's blogs, It's great and I need more.
Not just technique but this will be my first time of internship, I need to learn everthing that you thing a developer should be.

Submitting

Please fork this repo and submit your repository at jet@takemetour.com along with your contact information.

Note: These challenges must be done by yourself. There is no benefit for both sides if the answer do not reflect your true skill.

Basone01/job-quest-intern-2018