peteTheBaker.js

// Pete likes to bake some cakes. He has some recipes and ingredients. Unfortunately he is not good in maths. 
// Can you help him to find out, how many cakes he could bake considering his recipes?

// Write a function cakes(), which takes the recipe (object) and the available ingredients (also an object) and 
// returns the maximum number of cakes Pete can bake (integer). 
// For simplicity there are no units for the amounts (e.g. 1 lb of flour or 200 g of sugar are simply 1 or 200). 
// Ingredients that are not present in the objects, can be considered as 0.

// Examples:

// // must return 2
// cakes({flour: 500, sugar: 200, eggs: 1}, {flour: 1200, sugar: 1200, eggs: 5, milk: 200}); 
// // must return 0
// cakes({apples: 3, flour: 300, sugar: 150, milk: 100, oil: 100}, {sugar: 500, flour: 2000, milk: 2000}); 


function cakes(recipe, available) {
  let result = [];
  for(let key in recipe) {
    result.push(isNaN(parseInt(available[key] / recipe[key])) ? 0 : parseInt(available[key] / recipe[key]));
  }
  return Math.min(...result);
}

// OR

const cakes = (needs, has) => Math.min(
  ...Object.keys(needs).map(key => Math.floor(has[key] / needs[key] || 0))
)