🇺🇸 Make an array method that can return whether or not a context array is a subset of an input array. To simplify the problem, you can assume that neither array will contain objects or arrays as elements within them.

• Next level: Make the method work for arrays that contain objects and/or arrays as elements.

🇦🇷 Escriba una funcion que devuelva si cierto array dado es un subconjunto del array contextual. Para simplificar el problema, se puede suponer que ambos arrays no incluyen object/ array como elementos.

• Proximo nivel: reconstruye la funcion para que pueda aceptar object/ array.

🇰🇷 특정 배열 중 입력 배열이 하위 집합인지 여부를 반환할 수 있는 함수를 만드세요. 문제를 단순화하기 위해 두 배열 모두 객체 또는 배열를 요소로 포함하지 않는다.

• 다음 레벨: 객체 및/또는 배열을 요소로 포함하는 입력 배열에 대해 메서드를 리펙토링 하세요.

Example:

var a = ['commit','push']
 a.isSubsetOf(['commit','rebase','push','blame']) // true

 NOTE: You should disregard duplicates in the set.

 var b = ['merge','reset','reset']

b.isSubsetOf(['reset','merge','add','commit']) // true 

• See http://en.wikipedia.org/wiki/Subset for more on the definition of a
  subset.

# START [ here ] 🏁

Array.prototype.isSubsetOf = function(arr) {
  // Your CODE
}

// Test
var a = ['commit','push']
a.isSubsetOf(['commit','rebase','push','blame'])

# Javascript solution 🏆

• Run it on your browser console window (F12) 🖥
• Please feel free to add your preference language solution 👩‍👩‍👧‍👦
• Do your best to complete the problem 🎭
• if you can't beat this the solution is below 😱

Solution 👇

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SOLUTION

Array.prototype.isSubsetOf = function(arr) {
  // stringify all elements as obj's key
  var obj = objectify(arr);
console.log(obj)
  return this.reduce(function(acc, key) {
    if (!obj[key]) {
      return false;
    }
    return acc;
  }, true);

  function objectify(arr) {
    var obj = {};
    console.log(arr)
    arr.forEach(function(key) {
      obj[key] = 1; // if there is repeated [key] it overwrites
    });
    return obj;
  }
}

// Test
var a = ['commit','push']
a.isSubsetOf(['commit','rebase','push','blame']) // true

// var b = ['merge','reset','reset']
// b.isSubsetOf(['reset','merge','add','commit']) // true

// var c = ['yum', 'meal']
// c.isSubsetOf(['poo', 'loo', 'yum'])

////// Extra Credit 
// Test
var d  = ['cool', ['beans'], {0: 'yum'}];
d.isSubsetOf([{0: 'yum'}, 'cool', 'cool', 'cool', ['beans'], 'dude'])

// var e  = ['cool', ['beans'], {0: 'yum'}];
// e.isSubsetOf([{0: 'yum'}, 'dude', 'looks', 'like', 'a', 'lady'])